Lorenzo is studying aggression in children. He administers a questionnaire to some children that asks them about their feelings of aggression. Lorenzo then runs a statistical test to determine how consistent the responses are to different items on the questionnaire. This test is examining – reliability, and the statistic that represents this type of reliability is –.kappathe correlation coefficient rtest-retestinterraterCronbach’s alphainternal

Cronbach's Alpha is a test for internal consistency reliability for instruments using the Likert scale .

researcher is assessing the test-retest reliability of a personality questionnaire. Participants complete the questionnaire, and two weeks later, they complete the same questionnaire. Which correlation coefficient should the researcher use to measure the reliability?

A psychologist is designing a personality assessment questionnaire with 40 items. After administering the questionnaire to a sample of participants, they calculate Cronbach's alpha, which yields a result of 0.90. What does this alpha value suggest?a.The questionnaire has low reliability.b.The questionnaire has a single factor.c.The questionnaire needs more items.d.The questionnaire has high internal consistency.

Use a rating scale to document a child’s temperament.TrueFalse

Psychometric reliability can be influenced by:Group of answer choicesInternal consistencyTest-retest consistencyMeasurement errorAll/any of the above