Five-year-old Marco draws a picture of a train with a smiley face and sunglasses. This is an example of ______________________________

Professor Caine is running an experiment to determine if exercise affects memory retention. Two groups of participants are given the same list of 25 words and allowed 15 minutes to study them

Then one group sits idly in a classroom while the other participates in an hour-long aerobic work-out. After the work-out each group is tested in the classroom on the list of words. What is the independent variable in this study? a) the aerobic work-out b) the word list c) scores on the test d) time allowed to study

Which of the following statements about loneliness is TRUE?

A) Boys have greater problems with loneliness than girls do. B) Loneliness occurs less in adolescents than in older people. C) Lonely adolescents tend to be less attractive and less intelligent than non-lonely ones. D) all of the above