How to rekindle sexual desire in a long-term relationship?

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 bronfenbrenner level examines the developmental influences of homes, caregivers, friends, and teachers?

How did geographical features create a civilization in china