The grasping, rooting, and sucking reflexes of infants are best described as
a. fixed action patterns.
b. instincts.
c. conditioned reflexes.
d. adaptive reflexes.
D
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Jim lived right next door to Hector, and he had some of the more complex Lego sets that Hector didn’t. Being available, and having nice toys, are important qualities of a friend for 7 to 9 year olds
Indicate whether this statement is true or false.
Which of the following correlations represents the weakest degree of relation between two variables?
A) Daily calcium intake and bone mass density, r = +.11 B) Degree of exposure to lead and IQ scores in children, r = –.12 C) Hours of exposure to media violence and aggressive behavior, r = +.31 D) Number of cigarettes smoked per day and incidence of lung cancer, r = +.39
__________ validity is the extent to which a study superficially measures what it is intended to measure
a. Reliable b. Criterion c. Surface d. Face
Spearman proposed the concept of g after he found that
A) test items differed in the extent to which they predicted cognitive performance outside of the testing situation. B) crystallized and fluid intelligence are easy to distinguish in factor analysis. C) all test items he examined correlated with one another. D) separate, unrelated factors, called primary mental abilities, exist.