A group of scientists monitor the behavioral changes in a student through the various stages of his cognitive and psychosocial development. The student has a medical condition, and the scientists are interested in knowing about the progression of the condition during the various stages of development. The scientists are most likely conducting:
A. a correlational research study.
B. a case study.
C. an experimental research study.
D. a focus group study.
Answer: B
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Which of the following students is least likely to be sent to the office when exhibiting disruptive behavior?
a. Cleo, an African American student who lives with her mother, an accountant b. Dave, a white student whose parents are college professors c. Emmanuel, a Latino student whose father works in construction and whose mother stays home with his younger siblings d. Ellie, a white student whose parents work in retail
In a normal distribution with a mean of 50 and a standard deviation of 5, what percentage of scores fall between 55 and 60?
a. 13.5 b. 34 c. 68 d. 95
. Which of the following is an example of “present versus absence” variation of the independent variable?
a. All participants’ reaction times are measured after ingesting two beers b. In a study of distraction on reading comprehension, one group is distracted by noise, another by a flashing light, and a third by a bad odor c. The control group gets no drug, one experimental group gets 5 mg/kg of a drug, and a second experimental group gets 10 mg/kg of the drug d. An experimental group receives 5 mg/kg of a drug and the control group receives no drug (placebo)
In assessing alternatives, it is useful to compare them by taking into account their potential outcomes.
Answer the following statement true (T) or false (F)