How old do you have to be to be president?

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.

One similarity between the student non-violent coordinating committee (sncc) and the southern christian leadership conference (sclc) is that they both

What would happen to the tides if there was no moon and no sun in the sky?