The most common threat to the internal validity of research designs is probably:
A) experimenter bias
B) confounds
C) participant expectancies
D) regression toward the mean
B
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Have you ever been distracted while you were speaking and accidentally switched the sounds of two words? For example, a person might mean to say "I'm going to get a turkey sandwich," and instead say "I'm going to get a surkey tandwich."
This type of expressive inversion is called a __________. a. phonemic reversal b. syntactic switch c. spoonerism d. morphism
Children whose BMIs are between the 85th and 95th percentiles are classified as ___________
A) Overweight B) Obese C) Severely obese D) Morbidly obese
The best way to study causality is through
A. experimental research. B. correlational research. C. descriptive research. D. all of these.
A classic study (Harlow and Harlow) demonstrated that when baby monkeys were denied physical contact with their mothers,
A) they were able to readily transfer their affection and attachment to wire mesh substitute mothers. B) it had no obvious effect on their subsequent development as long as they were provided with proper nutrition. C) they grew up to be extremely maladjusted. D) they became less vulnerable to a wide range of physical illnesses.