According to your text, which of the following represents a critical internal validity threat of single-subjects designs overall?
A) Instrumentation
B) Generalization
C) History
D) Selection

Question

Quizplus · Accepted Answer

Instrumentation refers to changes in the measurement technique or equipment used in a study over time, which can affect the accuracy and consistency of the data collected. This is a critical internal validity threat for single-subject designs, as they rely heavily on repeated measurements of the same individual.

According to Your Text, Which of the Following Represents a Critical