A problem with longitudinal research on intelligence is that

it is usually distorted by cohort effects, especially in older participants.
few people participate in such research voluntarily.
people of lesser intelligence tend to volunteer for retesting.
practice on the test items may produce learning.

practice on the test items may produce learning.

Psychology

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All of the following EXCEPT __________ is considered one of the four basic aspects of temperament

A) emotionality B) sociability C) impulsivity D) activity E) energy

Psychology

The Rorschach inkblot test and Thematic Apperception test are examples of ________-based tests

Fill in the blank(s) with the appropriate word(s).

Psychology