PS102 Lecture Notes - Lecture 16: Standard Deviation
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Psychometric Approach:
-measures and assesses intelligence
-based on the bell curve
-normal distribution
-in bell curve, 50% of the population are below
-50% are above
About IQ Tests:
-average usually set at 100
-most Canadians will score between 85-115
-standard deviation usually set at 15
-comparison group is the rest of the population
Requirements for Good IQ Tests:
Must have 3 features:
-reliable
-valid
-standardized
Reliability:
-consistency
-ability of a test to yield nearly the same score each time a person takes the test or an alternative
of the test
Validity:
-ability of a test to measure what it is intended to measure