By Keith Coaley
This available publication outlines the major constituents of mental evaluate and gives case experiences to demonstrate their program, making this an awesome textbook for classes on psychometrics or mental overview. The publication covers the character of review, uncomplicated elements, how checks are made, underlying data, reliability and validity, review of intelligence, talents and character, non-psychometric ways, in addition to moral concerns and smooth advancements. a last bankruptcy explains how readers can build their very own assessments. Wide-ranging case reports show the diversity of contexts during which overview is carried out. The author’s readability of writing and use of functional examples all through is helping scholars observe those tools in perform with self belief as a part of their reports on an array of classes.
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Extra resources for An Introduction to Psychological Assessment and Psychometrics
In the case of some measures, such as cognitive or reasoning tests, all of the correct items are counted to give just one raw scale score (sometimes referred to simply as the raw score for a person). In this case the maximum possible response sets the limit of the raw score scale. For an ability test having 40 items, a person might have a raw score anywhere from 0 to 40. For other instruments, the items may be separated into two or more groups, each with its own raw score scale: • Specific ability or aptitude tests tend to keep their items separate, with a score for each test.
See Chapter 5. • Validity of the test. See Chapter 6. • Acceptability – can its purposes be explained and feedback offered? • Practicality – including the cost, equipment and facilities needed for its use. • Fairness, in terms of any legal issues involved, for example where this might relate to discrimination relating to sex, race, disability or age. Where tests are used to compare people, they are designed to discriminate between them, although in a fair and ethical way. This is discussed in Chapter 10.
Standardization provides information about how groups have responded to assessment and enables users to identify high, average and low scores. Reliability provides information on the accuracy of scores and validity about what an instrument measures. A publisher’s manual is often provided to give information about these. Assessment materials mostly measure abstract concepts and interpretation involves a process of inference. Both trait and state-based assessment instruments are available today. Traits represent relatively constant and stable, enduring characteristics of individuals, whilst states are defined as being made up of more transient characteristics.