Question

The single-case experimental design a. often incorporates several people at once. b. is not concerned with external validity. c. always uses a single case. d. is not concerned with internal validity.

Answer 1

Answer:

The correct answer to the question is C) .

Explanation:

The single case experiment design which can also be termed as single subject experimental design, is applied when the sample size or case is one .

This type of experiment is used to study the change in an individual's behavior and these changes occurs because of some treatment or intervention that an individual might have received.