46. During a study using the behavioral research strategy, it is common to have two observers record behavior simultaneously. What is the purpose for this procedure? a. It is used to ensure the...

46.

During a study using the behavioral research strategy, it is common to have two observers record behavior simultaneously. What is the purpose for this procedure?

a. It is used to ensure the external validity of the study.

b. It is used to evaluate the reliability of the measurements.

C. It provides an operational definition for the variables being measured

d. It helps ensure that the behaviors are not influenced by the presence of an observer