Which of the following is one of the world's leading causes of death among children that is preventable by vaccination?

The word association technique was developed initially for use in clinical situations by

A) Francis Galton. B) Emil Kraepelin. C) Alfred Binet. D) Carl Jung.

As a general pattern, _____ tend to have the lowest IQs

a. manual laborers b. professional workers c. technical workers d. white collar workers