CELLULAR PATHOLOGY- Staining protocols Essay Example | Topics and Well Written Essays - 1000 words

CELLULAR PATHOLOGY- Staining protocols - Essay Example Several tissue components can be demonstrated by this stain. It is an important diagnostic tool in most clinical settings. Substances that consist of glycol groups or alkylamino and amino derivatives are normally oxidized to form. An insoluble pink/magenta chromogen is later formed after these dialdehydes Periodic acid combines with the Schiff’s reagent. In tissue sections PAS positive substances include: Amyloid, cartilage, collagen, mucins, glycogen, and basement membranes among others, together with some organisms such as fungi. Method: As per the hand-out Results: Figure 1: shows Glycogen detection in the liver with PAS Figure 2: Shows PAS stain with diastase in the Hepatocytes Detection of the liver with glycogen storage disease. Figure 3: Represents mucins PAS stain (Intestine Alcain Blue). Figure 4: Shows Kidney tissue section, with Bowman’s capsule. Discussion i) Glycogen Most carbohydrates are broken down by the body from the foods we eat; it is further convert ed to a sugar type referred to as glucose. The main fuel source for the cells is glucose. When glucose is no longer needed by the body for energy, it is stored in the muscles and liver. The glucose stored consists of many connected glucose molecules referred to as glycogen. When a quick energy boost is required by the body in cases where the body is not receiving any glucose from food, there is break down of glycogen that results to glucose release into the bloodstream to generate fuel for the cells.( Knebelmann et al,1996) Glycogen demonstration in tissue sections, for example for the liver section tissues, it can be used to differentiate between normal liver tissue and the abnormal liver tissue by looking at the morphology. The liver is the main organ that stores glycogen. Any observation made after staining of the liver tissue that is different from typical liver tissue staining will indicate that the tissue is not normal hence diseased. For example, liver and fatty liver cells, scar tissue (fibroblasts) can be used to differentiate between normal and abnormal liver tissues( hepatocytes) after staining because of the absence of glycogen in normal cells. The diastase use in enzymes digestion of glycogen acts as a control. Hence, two slides comparison can show an area occupied by glycogen. PAS Stains glycogen but there can be pre-digestion of tissue with diastase in order to remove glycogen. Clinical Implication of PAS Stain of Glycogen We have various GSD types.   Individuals with GSD are born with it.   In GSD, there is storage of abnormal glycogen amount in the liver. For an individual with GSD: The liver is not able to regulate the use of glucose and glycogen. Certain enzymes involved in the regulation of the conversion of glucose into glycogen or glucose release from glycogen are not present.  Ã‚   At least 10 different GSDs types do exist. These types are placed in categories based on the missing enzyme. The GSD forms that are most common includes : types I, III and IV. One in every 20,000 individuals can have a type of GSD. GSD I, also referred to as von Gierke condition: Is caused by enzyme Glucose-6-Phosphatase deficiency.   GSD III, also referred to as Cori disease:  Is caused by debrancher enzyme deficiency. This leads to the body forming molecules of glycogen with abnormal structure. This unusual structure prevents the breakdown of glycogen into free glucose as well.   GSD IV also referred to as amylopectinosis:   increased glycogen amount in the tissues is not experienced. Instead, the building up

Diversity Hiring Essay Example | Topics and Well Written Essays - 2000 words

Diversity Hiring - Essay Example " It is irrefutable that current business operations have evolved over time, confounding managers with new issues. The evolution of new business strategies is in response to the changes in the external environment of business organizations. It should be noted that the developments in the market mentioned were beyond the effects of neither the current economic turmoil nor the technological revolution which radically altered the way business is done. The present mode of business is strongly influenced by the emergence of hypercompetitive markets that resulted from the rapid integration of markets brought about by globalization. As businesses are faced with new challenges and opportunities, it is imperative that they also employ a new approach in doing business. They do this by strengthening their core competencies by aligning their respective resources to their various objectives. It is irrefutable that human resource is the indispensable, if not the most important, asset in a business institution. The contribution of human resource in the success and mere survival of a company cannot be overstated. As such, companies are seen to align their workforce in order to fully reap the opportunities present in the market. Diversity hiring is the new trend in choosing the employees to work for an organization. As more and more companies are embracing this new system, more reports and empirical evidences are also reported which support direct hiring. This report will look at direct hiring as an ethical issue in business organizations. The first part will briefly look at the scope of direct hiring in the United States. Discussions on its advantages and ethical considerations will also be set forth. The paper will conclude with the key points tackled. Scope of Diversity Hiring The first step toward creating a more diversified workforce was taken by the President John F. Kennedy with the establishment of The President's Committee on Equal Employment Opportunity. This effort gave way in the formation of workforce which is comprised of people with different nationality. It should be noted that during this period there is a lack of appreciation of the value of diverse teams. In contrast, the program was enacted to create equal opportunity for prospective employees regardless of their ethnicity. However, the present day situation is now different. The importance of having a diverse team working for a business organization is not only done in order to comply with this requirement but due to the perceived value of inclusivity. In fact, a leading proponent of diversity recognized the importance of hiring employees with diverse backgrounds in order to boost the performance of a business organization. Gloria Johnson Goins, the vice president of diversity and inclusiveness for the Home Depot asserted American businesses should willing embrace this new trend in order for them to adapt to the nation's business demographics. According to ASME, workplace diversity is "the variety among people related to such factors as age, culture, education, employee status, family status, function, gender, national origin, physical appearance, race, regional origin, religion, sexual orientation, and thinking style." Thus, diversity embraces the differences among individuals and utilizes them for the utmost benefit of the business organization. As companies come to recognize the contribution of workplace

The World of Work Skills Certificate Essay Example | Topics and Well Written Essays - 1000 words

The World of Work Skills Certificate - Essay Example I am attracted to structural designing in light of the fact that I like the thought of molding my general surroundings to meet the requests without bounds. I seek after a testing profession which I will discover expressly compensating and have the capacity to feel that I have given something back to the society. Â  Scholastically, science has dependably been my primary intrigue and is the territory in which I am generally capable. I delighted in science, specifically finding out about human effect on nature. In any case, amid my grades in school, I understood that my advantage lay more profound in maths and material science. I delighted in the critical thinking included inside of my subjects and the way a genuine circumstance could be communicated and controlled scientifically. What I discovered especially fascinating was relating what had learned in the classroom to genuine circumstances, which is the thing that gave me more enthusiasm for structural building - the request of a testing profession where I would have the chance to hypothetically take care of issues and essentially apply answers for beneficially affect my general surroundings. Â  Amid my whole year, I have had a few work experience positions in different gifted exchanges, for example, building and joinery. Through joinery, I picked up energy about the requirement for precise outline and development, and in addition a learning of the employment of wood as a building material. In spite of the fact that a significant part of the building work I have attempted was in development, I observed it to be the priceless experience. For instance, whilst building a carport I learned about the significance of good outline and having so as to arrange to translate the plans keeping in mind the end goal to decide what number of blocks would be required.

Policy, Team, and Information Technology Differences-Terence Essay - 1

Policy, Team, and Information Technology Differences-Terence - Essay Example The study will investigate the various policies that guide the two systems use in different groups, and how the teams are affected by their implementation while analyzing the differences and possible solutions that would permit their efficient use in the organization. Information technology in organizations ensures that all the departments and organizational level uses the system in the group operations of their daily process, efficiency in their work and for administration purposes in the best interest that are allied to the organization goals and objectives. The information technologies cover a broader range of functions and for the efficiency, the system requires that less or nominal interference made to them by the departmental and organizational levels (Ngai, Chau,& Chan,2011). Dissimilar groups and departments though have implemented diverse information systems to their functions that foremost comprise of the departmental and enterprise information systems. The two data structures have distinctive features that facilitate them to adapt to different policies within the group. The departmental information system mainly construes utilizing the fundamental functions of the departments and organizational levels. The procedures are defined and consolidated to provide a single management with the overview of its operations and more often than not associated with a small organization or a sole unit of the groups. The enterprise policies aids in making decisions inside the departments and organizational levels as they provide an array of information from diverse sources (Xu, 2011). Reducing costs and providing easier administration are other policies that the enterprise system seeks to address with the departments and organizational levels. The enterprise system majorly associates with large organizations and have the propensity to deal with the groups holistically. The two systems, therefore, attempt to

Williams Syndrome - Genetic Pediatric Illness Research Paper

Williams Syndrome - Genetic Pediatric Illness - Research Paper Example   After some time, A.J. Beuren came across his own set of 11 patients who also had the same symptoms as described by Dr Williams in the past. Thanks to his contribution to the study of what was then an unknown illness, the disease was named after the two men who contributed the most its understanding, Williams-Beuren Syndrome. However, the illness has also come to be known by other illnesses over the years. Physiopedia (2011) lists the other names as follows: Dr. Aneal Khan M.D., who authored an article regarding Williams Syndrome for Medscape Reference (2011) described the clinical manifestation of the illness to include; â€Å"a distinct facial appearance, cardiovascular anomalies that may be present at birth or may develop later in life, idiopathic hypercalcemia, and a characteristic neurodevelopmental and behavioral profile†. The disease does not seem to afflict anyone specific gender, ethnicity, race, or socioeconomic background. However, it does seem to be most prevalent among children, affecting 7500 of every 20000 births. The most common symptoms of the birth defect according to Dr Rob Hicks (2011) include but are not limited to: Various in-depth studies of the illness link Williams Syndrome to the genetic makeup of an individual. Dr Rob Hicks (2011), author of â€Å"Williams Syndrome† for BBC Health explained that WS afflicted individuals most often have a defect in the DNA chain of chromosome 7 with about 26 genes deleted from its long arm. Unfortunately, chromosome 7 is one of the most important elements of the human gene as this particular gene is tasked with the manufacture of the protein elastin which according to Dr Hicks (2011), is â€Å"is responsible for providing strength and elasticity to blood vessel walls. â€Å" Babies born with Williams Syndrome are often underweight upon birth with difficulty in gaining weight and have certain development defects such as speech problems with the ability to speak not becoming present until the age of 3. However, the most concerning matter of this illness is the widespread Cardiovascular complications associated with it.  Ã‚  

Cognition domains Essay Example for Free

Cognition domains Essay Events that happen in an adolescent’s life can affect one of three domains; these three domains are known as ‘psychosocial’ ‘cognitive’ and ‘biophysical’. This essay will focus on the area of the cognition domain now this domain will be discussed in relation to an event that has affected my perception of the world around me, the way I feel in relation to blame and judgment and lastly the ability to learn how to be more reflective. My perception on life changed rapidly when I was informed of a tragic accident concerning the suicide of a family friend. This caused a rapid change in the way I thought about death, grief and sadness. â€Å"David Elkind proposed that formal operational thought also leads to adolescent egocentrism (difficulty differentiating one’s own thoughts and feelings)† (Sigelman, Rider, De George-Walker, Pg 173, 2013) This has impacted the way that I look at the world having gone through this experience I now see that people’s perception can change no matter what. I guess what’s trying to be said is that everyone’s perception is different and it is changing due to the experiences that we all encountering in our everyday lives. The judgment that came after the tragedy was phenomenal. Greg Newham will always be loved and greatly missed but never will he be forgotten. Was it my fault that he died? Greg Newham was a teacher. If I had visited him when the bell rang after school would he still be here today? I did not understand his wife’s decision to not let me go to the funeral. And because of this, because I never got to say my final goodbye it is hard to let go. Hard to move on. A book written by Temple University in the USA about seeking closure states â€Å"closure typically implies that something is finished, ended, closed. Finally you can move on† (2014). Without closure I feel that I am always judging myself. Always questioning my motives, wondering if I could have done more. The last aspect of cognitive development that was affected by this experience was learning. It is hard to live with the knowledge that someone’s death was your fault, even if rationally you know it wasn’t. Those left behind never usually learn the reasons as to why they harm themselves and those around them. Bronfenbrenner’s view of a developing person, with his or her  biological and psychological characteristics are embedded in a series of environmental systems which interact with each other and with the individual over time to influenced development. (Sigelman, Et.al, 2013), with all the developmental events that we all go through it is fair to say that the learning side of our cognitive development is always changing. This essay was written to explain the affects of our everyday lives and how it affects our cognitive domain. With what was said from Bronfenbrenner and David Elkind it is clear to say that the choices we make today do mostly change our lives in some way/s. I never completely understood the affects from my life could change the way I see and think about everything that I do today. References; Sigelman, Rider and De George-Walker, 2013, Life Span Human Development. Temple University, USA, 2014, http://www.temple.edu/tempress/chapters_1800/2136_ch1.pdf

Arguments For and Against Personality Predictors

Arguments For and Against Personality Predictors Arguments in favour Anyone seeking to measure personality has an abundance of useful psychometric instruments at their disposal, include the Minnesota Multiphasic Personality Inventory (MMPI) (e.g. Archer, 2005), the Weschler Intelligence Scale for Children (WISC) (Watkins et al, 1997), the Myers Briggs Type Indicator (MBTI) (Myers McCauley, 1985; McCrae Costa, 1989), and the, NEO Personality Inventory (revised) (Costa McCrae, 1992), and the Thematic Apperception Test (TAT) (Cramer, 1996), just to mention a few. Thus it should be simple matter to generate a reliable and valid set of scores, which can then be used to make various predictions about future behaviour. Studies have shown that the more established personality tests have acceptable levels of reliability (i.e. they measure personality consistently, both in terms of stability over time/across situations, and internally), and validity (they seem to measure personality, rather than some other psychological feature) (e.g. Costa McCrae, 1992; Wa tkins et al, 1997). Indeed, use of some of these measures is so widespread that they have become a standard part of psychological assessments in health care and recruitment, marriage counselling, and other fields (Davey, 2004; Myers, 2007). The data obtained can for example be used to make a prediction about the success of a marriage, professional abilities of a candidate for a job, or medical outcomes. For example, the MMPI is regularly used to make determinations about future behavioural problems in psychiatric patients (Arbisi et al, 2002). The NEO Personality Inventory and Myers Briggs Type Indicator have been fund to be particularly useful at predicting future behaviour. For example Moutafi et al (2003) asked 900 people to complete various psychological tests as part of an exercise conducted by a business consulting company. These tests included the MBTI and the revised version of the NEO Personality Inventory. Multiple regression analysis showed that various personality scales contained in both personality inventories reliably predict multiple dimensions of intelligence, at the 5% level of significance (Howitt Cramer, 2005). Clearly, the availability of tried and tested measurement tools suggests that it personality can be measured reasonably accurately, and hence used as the basis for making predictions. Another argument concerns the dispositional nature of personality traits. Personality has long been conceptualised as a stable and enduring feature that once developed does not change much during a person’s lifetime (Allport, 1937; Ryckman, 2004). This stability means it is possible to formulate a clear idea about the nature of a person’s personality (e.g. using a personality test) (Myers, 2007). This idea, once formed, can then be used to make predictions. To better appreciate this argument consider more volatile psychological characteristic like stress or coping (Janis, 1986). A persons stress levels can fluctuate widely over any given period of time. For example, an individual may experience high stress levels when the go to work during the day, but then feel relaxed once they return home. Similarly an individual may become highly agitated when flying in an aircraft and then subsequently experience little or no stress once they are back on the ground. Given the volat ility of stress levels it may be rather difficult for a researcher to conduct an overall and accurate assessment of a person’s anxiety. By contrast, personality shows sufficient continuity to enable a researcher develop a reliable personality profile (Engler, 2006) for any one individual. The accuracy of personality measurement is facilitated by the availability of suitable statistical tools, notably factor analysis (Tabachnick Fidell, 1996; Field, 2000). Factor analysis is a statistical method that allows one to condense a large amount of data into a small number of more manageable dimensions. In particular, a persons’ responses to a large number of items in an inventory can be reduced to a small number of basic dimensions that encapsulate the individuals’ personality. This is important given that personality is a multidimensional construct that can be described with thousands of words, phrases, and sentences, in the English language (Livesley Jackson, 1986). Consequently, personality theorists have routinely used this test to identify the basic dimensions of personality, such Goldberg’s (1993) ‘Big Five’ personality themes – agreeableness, conscientiousness, neuroticism, extraversion, and openness to experience. It is well known that renowned psychologist Hans Eysenck (Haggbloom, 2002) was one of those to first grasp the utility of factor analysis for developing accurate measures of personality. He subjected a large number of personality items to factor analyses, over several decades, yielding several dimensions: a proclivity to experience negative feelings, which he called neuroticism; an interest in social activity, labelled extraversion; and later a susceptibility to mental illness (e.g. schizophrenia), named psychoticism. These dimensions have been used to make predictions about a wide variety of behaviours, in many different situations (e.g. see review by Riggio Riggio, 2002). Furthermore, a person’s personality is a significant determinant of their behaviour in many different situations (Ryckman, 2004; Myers, 2007). This is a scientific fact, as demonstrated by the large number of studies that have used personality measures as the basis for determining various aspects of human behaviour under disparate conditions (McCrae Costa, 1990). For example, studies have shown how a defensive, unreceptive, or evasive personality can lead audiences to reject health warnings issued on a variety of topics and in a multiplicity of situations (see review by Eagly Chaiken, 1993). Empirical studies show that personality scores predict a significant amount of the variance in various behavioural scores, with the influence of chance factors falling below the five percent level (e.g. Moutafi et al, 2003). For this reason psychologists have spent a considerable amount of time and effort studying this construct. Once an accurate measurement of a persons personality have been obtained it should be fairly simple to make a significant prediction about their current or future behaviour in any given situation, using analytic procedures such as multiple regression analysis. Arguments against Psychologists cannot agree on the proper definition of personality, let alone measure it accurately and make reliable predictions. Open any relevant psychology textbook and one is confronted with several different theoretical accounts of precisely what personality means (e.g. Davey, 2004; Myers, 2007). For example, the legendary Sigmund Freud conceptualises personality as a multidimensional construct (incorporating the id, ego, and superego) that transcends the conscious, preconscious, and subconscious, and is driven by unconscious emotional problems. By contrast behaviourists, such as Burrhus Skinner, view personality as learned behaviours shaped by reinforcement and conditioning. Trait theorists like Gordon Allport conceptualise personality as stable behavioural characteristics that manifest across different situations. Thus, psychologists are far from reaching a consensus. Therefore, the idea that personality can be measured accurately is nonsensical. How can one measure a phenome non that isn’t clearly defined? Until psychologists can agree on a universal definition of personality, accurate measurement will remain an unattainable dream. At the beginning of this essay I provided a list of measurement tools for assessing personality, for example the MMPI, MBTI, and NEO personality inventory. While these instruments do appear to have some accuracy, their psychometric properties are continually the subject of doubt and criticism (e.g. McCrae Costa, 1989; Watkins et al, 1997). Reliability coefficients, while good, aren’t often high enough, and validity tests are rarely conclusive (Arbisi et al, 2002). Given these problems in the measurement of personality, accurate prediction of behaviour is bound to be impaired. For example, it is known fact that measurement error, resulting from the use unreliable and invalid measurement tools, can obscure significant relations between variables, resulting in a type II error (Baron Kenny, 1986; Howitt Cramer, 2 005). The idea that personality could be used to predict behaviour across situations rests on an important assumption – that how people respond in any given situation is necessarily predictable. The truth is that a person’s behaviour may sometimes be random with no apparent cause. This idea is echoes chaos theory (Gleick, 1987), a scientific school of thought that proposes that an event may be unpredictable due to various complexities or errors in its antecedent conditions. For example, long-term weather forecasting is often difficult because so many unstable climatic factors interact in such a complex fashion that minor changes in the nature of these interactions, and the elements which interact, could produce random, unpredictable, and escalating weather patterns. Chaos theory is applicable to the social sciences (Kiel Elliot, 1997). Different personality characteristics may interact (Howitt Cramer, 2005) in extremely complex fashions that any slight changes in the nature of these interactions or the variables involved can produce statistical and computational problems that reduce predictive power (Field, 2000). For example, any error in measurement of personality will be magnified to such an extent that it would obscure significant relationships between personality and behaviour. Baron and Kenny (1986) document this magnification in measurement error resulting from interactions between multiple variables. It means that behaviours produced by overly complex interactions between personality characteristics may to all intents and purposes be mathematically unpredictable, and hence appear random and sporadic, irrespective of the situation (Gleick, 1987). This is especially likely when trying to predict fleeting or eccentric behaviours (e.g. deliberate self-harm) often resulting from the complicated interplay between not just personality traits, but also other psychological phenomena, not to mention situational factors. There are others concerns. Psychologists can’t agree on whether personality traits are best conceptualised as stable entities that persist across situations or variable characteristics that change from one situation to the next (Davey, 2004). Which is it? Whatever view one subscribes to has measurement implications. Stable personality dispositions are generally more difficult to measure accurately, for various reasons (Leventhal et al, 1993). For example, people are less accurate at describing how they ‘generally’ behave, showing a memory bias towards positive rather than negative characteristics: in which case it would be more difficult to predict behaviour in any given situation, due to reliability and validity constraints. Finally, there is what social psychologists call the fundamental attribution error (Aronson, 1995). This refers to the tendency to overestimate the effect of personality on behaviour and underestimate the impact of the situation. Consider for example a person who has a fear of flying. They become highly stressed, agitated, and sometimes even panic stricken once a plane reaches cruising altitude. However, their anxiety disappears once the plane is back on the ground. The primary determinant of this individual’s emotional stress is situational – flying in a plane. Although personality may be important – for example, he/she may have a neurotic personality, making them more prone to stress (Riggio Riggio, 2002) – it would be a mistake to underestimate the effect of the situation (Janis, 1986; Engler, 2006). The essence of the fundamental attribution error here is thus: even if personality could be measured accurately, it may still fail to predict behaviour effectively to the extent that the behaviour in question is primarily a function of the situation rather than personality characteristics. Conclusion Can we predict a person’s response in any given situation if personality could be measured accurately? This essay presents arguments for and against. Regarding the former, psychometrically useful measures of personality abound, yielding reasonably reliable and valid personality scores that can be used for making behavioural predictions. Furthermore, analytic tools like factor analysis and the purportedly stable property of personality traits may both facilitate accurate measurement and further improve predictive power. Various empirical studies exist the support these arguments. However, there are several strong counterarguments that are difficult to refute. There is as yet in psychology no unanimous definition of personality. This raises serious questions about the psychometric attributes of any instrument that purports to measure personality. Indeed existing personality inventories are continually plagued by concerns about reliability and validity. Even without these psychom etric issues, a person’s behaviour is often heavily (if not entirely) determined by the prevailing situation, rather than their personality characteristics. Thus, even the most accurate personality measures will exhibit poor predictive power. In any case it is questionable whether human behaviour is always predictable. Certain responses may appear random, sporadic, and to all intents and purposes, unpredictable, due to analytic and methodological limits of existing science. In the midst of these constraining realities it is unlikely that personality traits could reliability predict behaviour across different situations References Allport, G. W. (1937). Personality: A Psychological Interpretation. New York: Holt,  Rinehart Winston. Arbisi, P., Ben-Porath Y. McNulty J (2002). A comparison of MMPI-2 validity in  African American and Caucasian psychiatric inpatients. Psychological  Assessment 14, pp.3-15. Archer, R.P. (2005). MMPI-A: Assessing Adolescent Psychopathology Lawrence  Erlbaum Associates Aronson, E. (1995) The Social Animal. New York: Freeman. Baron, R. M. Kenny, D. A. (1986). The moderator-mediator variable distinction in  social psychological research: Conceptual, strategic, and statistical  considerations. Journal of Personality and Social Psychology, 51,  pp.1173‑1182. Costa, P.T., McCrae, R.R. (1992). Revised NEO personality inventory and NEO  five-factor inventory professional manual. Florida: Psychological Assessment  Resources, Inc. Cramer, P. (1996) Storytelling, Narrative, and the Thematic Apperception Test. New  York City: Guilford Press. Davey, G. (ed) (2004) Complete Psychology. London: Hodder Stoughton. Eagly, A. Chaiken, S (1993). The Psychology of Attitudes, Fort Worth, TX:  Harcourt Brace Jovanovich Engler, B. (2006). Personality Theories. Boston: Houghton Mifflin. Field, A. (2000) Discovering Statistics using SPSS for Windows: Advanced  techniques for the Beginner. London: Sage. Goldberg, L. R. (1993). The structure of phenotypic personality traits. American  Psychologist, 48, pp.26-34. Haggbloom, S.J. (2002). The 100 most eminent psychologists of the 20th century.  Review of General Psychology, 6, pp.139-152. Howitt, D. Cramer, D. (2005) Introduction to Research Methods in Psychology.  London: Pearson. Janis, I.L. (1986). 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Demographic and personality  predictors of intelligence: A study using the Neo Personality Inventory and  Myers Briggs Type Indicator. European Journal of Personality, 17, pp.79–94. Myers, D. G. (2007). Psychology: Eighth edition in modules. New York: Worth  Publishers. Myers, I., McCauley, M.H. (1985), A Guide to the Development and Use of the  Myers Briggs Type Indicator, Palo Alto, CA: Consulting Psychologists Press. Ryckman, R. (2004). Theories of Personality. Belmont, CA: Thomson/Wadsworth. Riggio, H.R. Riggio, R.E. (2002) Emotional expressiveness, extraversion   neuroticism: a meta-analysis. Journal of Nonverbal Behavior, 26, pp.195-218. Tabachnick, B.G. Fidell, L.S. (1996). Using Multivariate Statistics. New York:  HarperCollins Watkins, M.W., Kush, J., Glutting, J.J. (1997). Discriminant and predictive validity  of the WISC-III ACID profile among children with learning disabilities.  Psychology in the Schools, 34, pp.309-319.