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.
Question
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.
Solution
The alpha value of 0.90 suggests that the questionnaire has high internal consistency. Cronbach's alpha is a measure of internal consistency or reliability of a test or scale. It ranges from 0 to 1, with higher values indicating greater reliability. An alpha of 0.90 is generally considered very good, suggesting that the items on the questionnaire are all measuring the same underlying construct, in this case, personality.
Similar Questions
You are a seasoned researcher leading a team to develop a comprehensive employee satisfaction survey for a multinational corporation. After conducting an item analysis to assess the reliability of the tested construct, you obtain a Cronbach’s Alpha value of 0.7. In this scenario, what interpretation can be made based on the above findings? Group of answer choicesThe reliability of the construct is considered unacceptableThe reliability of the construct is considered excellentThe reliability of the construct is considered acceptableThe reliability of the construct is considered poor
Which of these values could possibly be telling us about Cronbach’s alpha?Group of answer choices.83-.761.25A p value is required to be certain
Cronbach's Alpha is a test for internal consistency reliability for instruments using the Likert scale .
Match the rule of thumb for interpreting the Cronbach's alpha as a measure of consistency with their corresponding descriptions or significance.Answer instructionsα ≥ 0.900.80 ≤ α < 0.900.7 ≤ α < 0.80.6 ≤ α < 0.70.5 ≤ α < 0.6α < 0.5
A Cronbach’s alpha coefficient of 0.80 implies thatGroup of answer choicesthe items of the scale have strong internal consistencythe items of the scale are unidimensionalthe items of the scale have low internal consistencyNeed to do subsequent analysis to make any inference
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