Gurjit is easily angered when threatened and hates it when his coworkers are not prepared. In addition, he is always in a rush and feels that he has to be the best employee in the company. Gurjit's personality is most consistent with

Theories are vital tools for developmental researchers because they

What will be an ideal response?

Which of the following has research shown to be a reliable gender difference?

a. Boys show earlier verbal development. b. Girls show stronger spatial abilities. c. Girls are more likely to show early language disorders. d. Girls show a higher tendency toward compliance. e. Boys are more effective at expressing emotions.