When teams have large numbers of people, it increases

The difficulty level in speed tests is

The test which yields four second-order factors in addition to other factors of personality is

Probable Error (PE) gives misleading result

Consider the following statements :

I. RET uses 40 or 50 regular techniques

II. RET uses irregular techniques like body massage

III. RET uses imagery

IV. RET uses relaxation.

Of the statements :

The phenomenon that may operate when subjects are selected on the basis of extremely high or extremely low pre-test scores is called