PJ conducts an experimental study on the effects of soft music during high stakes science testing. He randomly assigns students at the school. In one condition he does not provide music for testing while in the other group he does provide the music. One concern in his study is that during the year the music teacher at the school he administered the study shared with students the physiological
benefits of soft music. The introduction of the benefits of music during the duration of his study can be considered which of the following threats?
a. History
b. Maturation
c. Mortality
d. Testing
a
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When preschoolers ____________________ entire sequences of behavior, we get to see them reenact their world as they perceive it
Fill in the blank(s) with correct word
Green science is a branch of ____________ studies that includes the study of alternative and renewable energy, food webs, conservation, resource distribution, and the changes in world climate.
A. physical B. chemical C. environmental D. mathematical
The use of open-ended materials invite children's:
a. independent thinking b. imagination and inventive thinking c. convergent thinking d. concrete thinking
What is the dependent variable?
An industrial psychologist tests three different keyboard designs for a new computer to determine which one produces optimal performance. Four computer operators are given text material and told to type it as fast as they can. They spend 3 minutes on each keyboard with a 10-minute rest between each keyboard. The number of errors committed are recorded. The researcher wants to know if there is a significant difference in errors among the three types of keyboards (called Keyboard A, Keyboard B, and Keyboard C). The one-way, repeated-measures ANOVA revealed that there was a significant difference in number of errors made based on the type of keyboard being used, F(2, 38) = 6.91, p = .003, ?p2 = 0.267. Bonferroni-corrected multiple comparisons revealed that more mistakes were made with Keyboard C (M = 6.00, SD = 2.18) than with Keyboard B (M = 4.00, SD = 2.05), p < .01. There was no difference between Keyboard A (M = 5.00, SD = 2.16) and Keyboard B, p = .59 or between Keyboard A and Keyboard C, p = .71.