Evaluation of an IQ test : Analysing the Reliability and Validity of the Psygat
             This study involved the examination of a newly developed intelligence test, the Psygat, in order to assess its reliability and construct validity. A group of 268 psychology students, with an average age of 22.37 were asked to complete the Psygat tests after completing two other intelligence tests, a Culture Fair test and a Verbal IQ test. The results of the Psygat were then analysed for internal reliability through a split half analysis based on age. The construct validity of the Psygat was examined through the analysis of the test scores against the other two intelligence tests. The hypothesis that the test would show significant internal reliability as well construct validity when measured against the other two tests was supported, although inconsistencies with the Culture Fair IQ test were detected for the younger age group. It was concluded that the evidence suggests that the Psygat is a test that could be validly used as an assessment of verbal intelligence, but further investigation is required regarding the tests use for the assessment of culture fair parameters.
             While countless intelligence tests have been developed over the last century, the need for strict policing over the construction and administration of tests in order to prevent misuse has been well established. As far back as 1944 Lawson (1944,1992) identified significant problems with the construction and use of intelligence tests and proposed strict guidelines. Since then, the number of tests in common use has increased dramatically, with their importance in the functioning of the community being advanced considerably. However, despite the best efforts of the international psychology community, concern has been growing in recent years over the misuse of psychological testing, including intelligence tests (Turner et al, 2001, Daniel 1997), with at least some of this concern being dire...