Chapter 9 thought, language, and intelligence

Correlate highly with one another but not with

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ical concept, or construct, based on a sample of relevant behavior - To construct a test, one needs to decide which specific behaviors serve best as indicators of intellectual abilities You need to take a sample Reliability - Refers to consistency of measurement - Assume that intelligence is a stable trait, and that test ­retest reliability in the same group of people should be similar on different occasions - Correlation of IQs 9 year olds and 40 year olds is in the .7 to .8 range showing a high degree of stability Relative to age, a person's intelligence does not change very much - The test itself must be internally consistent, meaning that all the items within a test is measuring the same thing - Interjudge reliability is when the same score should be given even if different psychologists grade the same test Scoring instructions must be explicit Validity - Validity refers to how well a test actually measures what it is designed to measure - Construct validity refers to whether a test is actually measuring what its trying to measure A test with perfect construct validity means that IQ differences truly measures differences in intelligence Psych 1000 My Notes Page 75 differences in intelligence - Content validity: does the test include all the aspects for the construct of interest Eg. An arithmetic test should include all the modes of operation and not just addition - Predictive validity is how highly scores correlate with criterion measures such as school and job performance IQ and school performance grades are in the +.60 range for high school students and +.30 to +.50 for university students SATs predict university performance with correlation of just below +.50 To a lesser degree, IQ predicts job performance with a +0.2 to +0.5 correlation StandardizationandNorms - Standardization has 2 elements 1. Tests must be administered in a well controlled environment to eliminate uncontrolled factors 2. A collection of norms (Test scores derived from a large sample) used to compare and interpret individual scores - When norms are collected...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online