You are doing an experiment to test whether exercise improves self-control in children. Half of the children will jump rope for five minutes before being left alone in a room with a bowl of candy. The other half of the children will color for five minutes before being left alone in the room with the candy. You plan to measure how long it takes for each child to begin eating the candy as well as how much candy the children consume. Which statement about your research is true?
-Your dependent variable has two operational definitions.
-Your independent variable has two operational definitions.
-Your study does not have a control group.
-Your study has the advantage of taking place in a real-world setting.
-Your dependent variable has two operational definitions.
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The three goals of science are to:
a. describe, research, and explain. b. describe, predict, and research. c. predict, explain, and research. d. describe, predict, and explain.
What can we conclude about the accuracy of speech production?
a. People frequently make errors that include phoneme combinations rarely found in English. b. For most speakers, their language production is only about 45% accurate. c. Speech production is far more accurate than language comprehension. d. Even high-status speakers may produce a large number of speech errors.
When patients with schizophrenia fail to perform behaviors considered to be normal, we refer to these "missing" behaviors as _________ symptoms
a. negative b. positive c. active-phase d. prodromal
Lightness constancy works because the
a. percentage of light an object reflects remains about the same even as the absolute amount of light changes. b. absolute amount of light that an object reflects remains constant across all environments. c. visual system has evolved to ignore the percentage of light that an object reflects. d. retinal image of an object remains constant even when the object is placed in different locations.