Which of the following would not contribute to error variance in an experiment?
a. the personalities of the participants
b. the independent variable
c. participants' moods
d. mistakes in recording the data
e. all of the above contribute to error variance
B
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Why would babies be born with a variety of reflexes?
A. Reflexes are primarily used to orient an infant upward, toward sunlight. B. Reflexes reflect the most primitive form of learning, so this primes the infant for later learning of more complex information. C. Most reflexes confer some survival value to the infant. D. There is no logical reason why reflexes should be present at birth.
One biological factor that has been related to individuals who experience insomnia is a. Lower body temperature. b. higher body temperature. c. low body weight
d. percentage of body fat.
What age do children reach one-half of their adult height?
A. about 2 years of age B. about 3 years of age C. about 1.5 years of age D. about 3.5 years of age
According to Newell and Simon, which of the following characteristics is important for problem solving?
a. Capacity c. Retrieval time b. Storage time d. All these