Shawn is more likely to smoke marijuana in situations where he believes it will make him relaxed than in situations where he feels he will make a fool of himself. Shawn's ideas about smoking marijuana reflect his

The Bayley Scales of Infant Development clearly can identify infants at risk, for example,

medically challenged infants score lower than healthy infants. However, the instrument is not a good predictor of later intellect during childhood. Thus, for a research study, this instrument is a better __________ variable than __________ variable. Fill in the blanks with correct word

Ava wants to design a study in which the causes and effects are measured at the same point in time because it is more cost-efficient. This type of study design is called

a) longitudinal. b) correlational. c) cross-sectional. d) epidemiological.