Which of the following is not a secondary reinforcer?
A. high grades
B. money
C. shelter
D. a gold star
Answer: C
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Many people who retire from their career choose to ________ so that they can give back to their community
Fill in the blank(s) with correct word
Which of the following has been seen as an option to the use of embryonic stem cells that eliminates the ethical issues related to the use of stem cells?
A. Using fetal tissues B. In-vitro fertilization C. Human chorionic gonadotropin transplants D. Induced pluripotent stem cells
For most adults, the cessation of an infant's crying is
a. a sign of hunger. b. readily ignored. c. a negative reinforcer. d. a sign of discomfort. e. a sign of sleepiness.
Over the past 100 years, girls in the United States and other cultures have been experiencing puberty at earlier ages
Indicate whether the statement is true or false.