The use of the principles of chance to assign participants to treatment and control groups for the purpose of avoiding systematic bias is called
a. randomization. c. random dispersion.
b. random assignment. d. random variability.
B
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Girls with a greater body mass index (BMI) mature earlier than girls with a lower BMI.
Answer the following statement true (T) or false (F)
The game of ____ helps infants acquire the cognitive understanding of object permanence
a. patty cake b. peekaboo c. Simon says d. tag
Imagine that you have signed up for a research study in which you will be completing a personality inventory. You can expect to
a. undergo a systematic interview by a trained clinical psychologist. b. read a series of statements and indicate whether each is true of yourself. c. report what you see in a series of ambiguous pictures. d. be tested for your potential for acquiring various skills.
Which theory of pain suggests that there are mechanisms in the spinal cord that can either "permit" or "block" pain messages from getting to the brain?
a. Nociceptive reduction theory b. Neuropathic blocking theory c. Spinal inhibition theory d. Gate-control theory