Reliability, validity and norming sample populations play critical roles in the usefulness of assessment instruments used in forensics assessments. These three facets of assessment help to determine whether or not the results the assessment yield is credible. Additionally, they each help to evaluate a particular aspect of an instrument, although there is generally a degree of correlation between these factors. Validity is simply the accuracy of a test to effectively measure

Psychological Testing Psychological tests are an important aspect of clinical psychology. Psychological tests are normally administered by professional psychologists as a way of learning fact on how people function or in predicting their future. The paper will look at the definition of the term test, give a description of the major categories of tests while identifying the major uses and users of these tests. There will also be comparing and contrasting

moderate impairment), while dependent variables included the levels of measured performance on the test. Operationalization involved demonstrating the ability to perform the tasks of daily life. Simple cooking was tested by asking the test subject to cook oatmeal; using a telephone was tested by requiring the subject to inquire about grocery delivery on the phone; and the test subject was required to select and administer medications correctly and select

Reliability of Test Reliability is defined by Joppe (2002,p.1) as the level of consistency of the obtained results over a period of time as well as an accurate representation of the population under study. If the outcome of the study can be reproduced using a similar methodology then the instrument used in the research are said to be reliable. It is worth noticing that there is an element of replicability as well

Psychological Testing When one hears the phrase "psychological testing" one might be inclined to think of a test to determine one's mental health, a test that could tell someone whether she or he was crazy or not. But psychological testing is hardly so clear-cut, nor does it deal with the highly subjective subject of sanity. Psychological tests instead measure a range of qualities and potentials, including one's aptitude for various kinds

assist counselors in selecting psychological tests and/or assessments? There are a number of psychology test directories available in reference libraries. Thee directories typically contain a directory of psychology tests organized according to subject matter. For example, there will be separate sections for self-concept, cognitive ability, personality traits, etc. Each reference book will have its own system of classification so this must be taken into account. For each entry, there is typically