Which statement is accurate about correlational studies?
a. They are very limited in the number of variables that can be evaluated at one time
b. They allow us to evaluate variables that would be unethical to manipulate in other types of research.
c. They give us clear information about the direction of causality.
d. They can tell us about cause and effect.
b
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Shortly after birth, David's head began to grow. A shunt was placed in his skull to drain fluid. He has seizures, trouble seeing, and mild intellectual deficits. David's most likely diagnosis is __________.
A. microcephaly B. phenylketonuria C. Turner's syndrome D. hydrocephaly
If sample variance is computed by dividing SS by n, then the average value of the sample variances from all the possible random samples will be _______ the population variance
a. smaller than c. exactly equal to b. larger than d. unrelated to
According to Ryff, the six elements of well-being in adulthood are autonomy (personal freedom), environmental mastery, positive relations with others, a purpose in life, continued personal growth, and __________
Fill in the blank(s) with correct word
_____ says that there is a constant proportional relationship between the just noticeable difference (JND) and the original stimulus intensity
A) Weber's law B) Signal detection theory C) Signal-to-noise ratio D) Sensory adaptation