Dr Ewell, a Developmental Psychologist, Is Planning on Conducting a Study

Dr. Ewell, a developmental psychologist, is planning on conducting a study that involves watching children play together to determine how sharing behavior occurs in same-sex friend pairs compared to opposite-sex friend pairs.
Dr) Ewell decides to collect his data at a neighborhood park. He has his two research assistants pose as a married couple having a picnic. While having their picnic, they take detailed records of the sharing behavior of the children and note whether the pairs are same sex or opposite sex. Given his use of two research assistants, he must establish the of their measures.

A) face validity
B) convergent validity
C) interrater reliability
D) test-retest reliability

Correct Answer:

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