Exam 1

1. Metainformation

   Tag	Value
   file	Reliability_uu-Cronbach's-alpha-001-en_uu-Cronbach's-alpha-001-en
   name	uu-Cronbach's-alpha-001-en
   section	Reliability/Analysis/Cronbach's alpha
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Interpreting output
   Program	SPSS
   Language	English
   Level	Statistical Literacy

   Question

   The SPSS output below of the reliability analysis for the Negative Fear of Failure scale is based on data from the Performance Motivation Test for Children (PMTK). Suppose you need to shorten the test, which of the four items listed is least likely to be removed from the scale?

   

   
   
   1. FALSE: Item 1
   2. FALSE: Item 5
   3. TRUE: Item 11
   4. FALSE: Item 14
   
   

   Solution

   This question can be approached in 2 ways, item-rest correlation and Cronbach’s Alpha if item deleted. - Item-rest correlation: the higher the Item-rest correlation is (column: Corrected Item-Total Correlation), the better an item fits the scale. Thus, an item is least eligible when the Item-rest correlation is highest (indicating item 11, r = .61). - Cronbach’s Alpha if item deleted: The column of the same name gives the Cronbach’s Alpha if the item in question is removed from the scale. Since the goal is to have the highest possible Cronbach’s Alpha, an item is least likely to be removed if Cronbach’s alpha is lowest (indicating item 11, alpha = .829).