"The writer has heard a great deal concerning intelligence and the use of intelligence tests. However, not all of the opinions expressed have been in agreement, and there seems to be a large area of uncertainty for the classroom teacher concerning this important part of pupil evaluation. Confusion seems to center around certain focal points which are of particular importance to the teacher. What is intelligence? Can it be measured? Do the intelligence tests administered to school children give an adequate account of their abilities? Can children be safely compared to one another in terms of their scores on intelligence tests? Are intelligence test scores of any use as indicators of children's achievement? These are the aspects of intelligence and the testing of intelligence which are of primary concern to the classroom teacher and about which adequate knowledge is imperative if the teacher is to do the most effective job. It is the purpose of this study, then, to try and answer some of these questions"--Introduction. / "August, 1958." / Typescript. / "Submitted to the Graduate Council of Florida State University in partial fulfillment of the requirements for the degree of Master of Arts." / Advisor: Mildred E. Swearingen, Professor Directing Paper. / Includes bibliographical references (leaves 48-49).

A most important consideration in the area of Psychometrics is the concept of "validity". The question raised by the concept is: "What does this test measure?" To answer the question, We may either correlate the test being examined with some objective criteria or with another test. As we attempt to validate tests our knowledge of what the basic mental and personality traits are and how they relate to one another continues to grow and change. The test instruments in this study are thought to measure rigidity in personality and concreteness in cognition. Therefore, a specific population considered high in these human factors is chosen for this study. Although some would say that such a population would tend to bias this present study by producing a high correlation, the fact is that such a correlation would tend to support the idea that these tests do measure what they purport to measure. If an average normal population produced no correlation at all, it would tell us nothing of the tests. The purpose of this study is to determine whether Luchins' Water Jar Problems, an Einstellung test supported by a great deal of validation data , and Milgram's Word Meaning test, a relatively new test with almost no validation data, are positively or negatively related, and whether or not the relationship is statistically significant. If a significant relationship is found, it will give some validity to Milgram's Word Meaning test.

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The purpose of this study is to determine which items on a personality rating scale are most valid in describing individuals who have been selected on the basis of social acceptance.

The present study was designed to assess both the construct of psychopathy in a female jail sample as well as the quality of the measures that have been employed to assess this personality style. Utilizing the multitrait-multimethod matrix proposed by Campbell and Fiske (1959), the construct of psychopathy was measured via three instruments: (a) the Antisocial Scale of the Personality Assessment Inventory, (b) the Psychopathy Checklist - Revised, and (c) the Antisocial Scale of the Personality Disorder Examination. In addition, the predictive validity of each of these measures of psychopathy was evaluated to determine their ability to predict institutional violence and non-compliance. The results revealed significant convergence and divergence across the three instruments supporting the construct of psychopathy in a female jail sample. In addition, the measures of psychopathy demonstrated moderate predictive validity.