Jenny thinks she knows what Professor Black’s study is about and so she responds in a way that she thinks will help him to support his hypothesis. How can Professor Black maximize the validity of his observations of Jenny’s behavior?
A. He can tell Jenny the true purpose of his study.
B. He can keep Jenny blind to the true purpose of his study.
C. He can keep Jenny and the person observing her behavior blind about the purpose of his study.
D. He can cancel the study entirely.
E. He shouldn’t do anything because validity is not that important.
C. He can keep Jenny and the person observing her behavior blind about the purpose of his study.
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Children learn strategies for math, reading, memory, or problem-solving in various places but especially at
a. a parent's lap during preschool age. b. informal play activities with peers. c. scouts or other youth activities. d. school.
Mikael is a toddler who can stand on one leg, run with stiff legs, and kick a ball. Mikael is at least ____
a. 6 months old b. 12 months old c. 18 months old d. 24 months old
In developed countries, deaths under age 5 years are rare and occur most often due to ____
a. SIDS b. infectious diseases c. accidents d. abuse
Easterlin’s study of happiness and money found that other factors:
a. such as marriage, health, and education contributed as well to happiness. b. such as marriage, health, and education contributed little to happiness. c. such as marriage, and education negatively impacted happiness scores. d. included differences in the definition of well-being and happiness.