A set of scores ranges from a high of X = 96 to a low of X = 11 . If these scores were placed in a grouped frequency distribution table, what is the best value for the interval width?
a. 5 points c. 9 points
b. 8 points d. 10 points
D
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Brooke has been involved in ballet since she was 4 years old, has always earned straight As at school, plays two musical instruments in a competitive youth orchestra, and recently graduated 1st in her class at Harvard. Despite these accomplishments Brooke continues to push herself to set higher goals for herself and fears possible failure in these goals. Brooke's pattern of behaviors may put her
at risk for the development of an eating disorder related to which of the following? a. obsession b. perfectionism c. compulsion d. anxiety
Darryl, age 15, likes this drug because it is freebased, produces an intense and immediate high, and, like cigarettes, is smoked. The drug is ____
a. PCP b. crack c. amphetamine d. powder cocaine
Which statement regarding deception in psychological research is TRUE?
A) Deception cannot be used. B) Deception is a standard practice to minimize demand characteristics and does not need to be justified. C) Deception can be used only when alternative procedures are not available and the study has applied or scientific value. D) Deception can be used anytime it answers an important scientific question.
A duration method is used to quantify observations made in a study by ______.
A. dividing an observational period into equal intervals of time, then recording whether or not certain behaviors occur in each interval B. counting the number of times a behavior occurs during a fixed or predetermined period of time C. recording the amount of time or duration that participants engage in a certain behavior during a fixed period of time D. defining behavior