LOL i would have never gussed

What restrictions do you think should be placed on studies with animal participants? explain

Apsychologist has developed a series of personality inventories and wants to determine if they are valid. one of the scales measures perfectionism, so he asks a colleague for advice on how to establish the validity of this scale. the colleague tells him that if he were to find a sample of people with personality disorder, these people would obtain high scores on a scale that measures perfectionism.

Which number identifies the guyot? a. 1 b. 2 c. 3 d. 4 e. 5 f. 6