Consider the following statements :

Assertion (A) : People with obsessive-complusive personality disorder are characterised by a fixation on things being done the right way.

Reason (R) : People with obsessive-compulsive personality disorder show rigidity and stubbornness.

Now select your answer according to the coding scheme given below :

Cognitive distortion

"Children will score high on a reading achievement test after 1st grade than they did prior to 1st grade".

1. The above need a one-tailed test
2. The above is directional hypothesis
3. The above is a null hypothesis
4. The above need a two-tailed test

The number of items in the original Minnesota multiphasic personality inventory was

Consider the following statements :

Assertion (A) : The research hypothesis can take a declarative form

Reason (R) : The research hypothesis can take a question form.

Now select your answer according to the coding scheme given below :

If one selects samples randomly at all stages, it is known as