Highlights
Task:
Step 1 (1.5 point)
In your own words, summarize the main hypothesis that Langer and Rodin tested. In your answer make sure to
clearly indicate what their hypothesized independent variable (IV) was
clearly indicate what their hypothesized dependent variable (DV) was
specify whether Langer and Rodin expected the causal impact of the IV on the DV to be positive (i.e., when the IV is high the DV should be high) or negative (i.e., when the IV is high the DV should be low).
Step 2 (0.5 point)
In your own words, briefly summarize the procedures that Langer and Rodin used to manipulate the levels of the IV across the conditions of their study.
Step 3 (0.5 point)
In your own words, briefly summarize the procedure that Langer and Rodin used to assign participants to the conditions.
Step 4 (0.5 point)
In your own words, briefly summarize the measures that Langer and Rodin used to operationalize the DV.
Step 5 (2 points)
Evaluate the internal validity of the method that Langer and Rodin used to assign participants to conditions. In your answer, using concepts learned in this course, explain why you think that this method of assignment had strong internal validity for testing Langer and Rodin's causal hypothesis or did it have weak internal validity for testing that hypothesis.
Step 6 (3 points)
Focusing on the procedures used in this study to manipulate the levels of the IV, your task is to identify some other variable that may have been confounded with the manipulation of the IV. Remember that a confound is a variable other than the IV that is manipulated alongside the IV and could provide an alternative explanation of any effects on the DV. Examine the manipulation of the IV very carefully to identify what other factors the researchers might have manipulated other than the IV they were intending to manipulate.
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