Willie and Harry ate all their vegetables at dinner. Their mum, Diana, was so happy with their behavior that she promised to read an extra favorite book to them before bedtime. Reading the book to them represents a __________.
A. positive reinforcement
B. negative reinforcement
C. positive punishment
D. negative punishment
A. positive reinforcement
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On average, how many hours per day do children spend in front of the television?
a. ?1–2 hours b. ?3–5 hours c. ?6–9 hours d. ?12 or more hours
Given: mean = 60; SD = 10; Mo = 60; N = 50; The distribution is normal. Blair's z-score is + 2.00. Which are Blair's correct conclusions: I beat exactly 87.7% of the class; My raw score is 80; My percentile rank is greater than 97; I cannot determine my percentile rank without more information.
What will be an ideal response?
As class sizes are reduced the lower number of students in a class first impacts student achievement when the size of the group becomes
a. less than 30 b. less than 25 c. less than 20 d. less than 15
The most common descriptive statistic used in causal-comparative research as a measure of central tendency is the
a. range. b. mode. c. mean. d. median.