Which of the following statements is TRUE regarding reliability?
A) The minimum number of items in a scale to measure a particular concept should be at least five.
B) The items included in the scale can be either positively or negatively correlated.
C) Items in a scale that are correlated with other items in the scale at a level lower than 0.30 should be evaluated for removal from the scale.
D) Reliability is the extent to which a construct measures what it is supposed to measure.
E) Reliability assesses whether a construct performs as expected relative to other variables indentified as meaningful criteria.

Question

Quizplus · Accepted Answer

This statement is true regarding reliability. When items in a scale are weakly correlated with other items in the scale, it indicates that they may not be consistently measuring the same construct and should be evaluated for removal to increase reliability. The other statements are incorrect. A) There is no specific minimum number of items required for a scale, although having more items can increase reliability. B) It is recommended that items in a scale be positively correlated to ensure they are measuring the same construct. D) This is the definition of validity, not reliability. E) This statement describes criterion validity, which is a type of validity, not reliability.

Which of the Following Statements Is TRUE Regarding Reliability