The design of all current personal computers is a "desk metaphor," which presents images, such as "files," "folders," and "trash can." This is an example of design

Which of the following is NOT an example of operant behavior?

a) a child doing her homework after she receives her teacher's approval for her behavior b) a rat pressing a bar after receiving food for this behavior c) a dog blinking its eyes after a flash of light is presented d) a rat pressing a bar after avoiding a shock for this behavior

Prior to menopause, women go through a 10 to 15 year period known as _____, which is the result of decreasing female sex hormone levels

a. androgyny b. perimenopause c. antemenopause d. masculinization