Identify two variables that were manipulated in the study. Who the participants were asked to think about Age of participants
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A researcher is interested in the ability to learn about different things. He thinks it is easier for younger people to learn about pop culture while it is easier for older people to learn about historical facts. Further, he thinks that the very young will learn best about technology. In order to test this hypothesis, very young (12-15), young (16-34 years old) and old (35+) participants read an article about technology or an article about history or an article about pop culture. Their memory for the information is tested. a. Identify the design (be specific: e.g. 2 x 2 repeated measures factors design) b. Identify the independent variable(s). c. Identify the dependent variable. d. Identify possible main effects. e. Identify any possible reactions.
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Gerontologists interested in the effects of aging on reaction time have two groups of subjects take a test in which they must indicate as quickly as possible whether a probe word was a member of a previous set of words. One group of subjects is between the ages of 25 and 45, and the other group is between the ages of 65 and 85. The time it takes to make the response is measured. a. What is the independent variable in this study? b. What is the dependent variable in this study? c. Identify the control and experimental groups in this study. d. Is the independent variable manipulated, or is it a subject variable?
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QUESTION 1 An investigator tested the following hypothesis: "As age increases, memory ability increases". The investigator recruited 50 males and 50 females to participate in the study. Participants were recruited from New York, El Paso, and Los Angeles. What was the independent variable in the above study? Age Memory ability Gender of the participants City from which participants were recruited (New York, El Paso, Los Angeles) QUESTION 2 An investigator tests the following hypothesis: "As exposure to T.V. violence increases, aggressive behavior in children increases". What is the dependent variable? Children Amount of aggressive behavior displayed by children in the study Amount of T.V. violence viewed by children None of the above
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