Psy

An experimenter wants to study the relationship between breast-feeding and Infant Formula X in underdeveloped countries. She randomly assigns 300 infants to Group A or B and weighs the infants every three days for the first four weeks of life.
IV:

DV:

Two groups of subjects were told they were going to receive electrical shocks as part of a learning experiment. One group was told that the shocks would be relatively painful. The other group was told that the shocks would be mild and produce a “tickling sensation.” The subjects were then asked if they wished to wait individually or with a group while the shock machinery was being set up.
IV:

DV:

One half of the Principles of Psychology students completed computerized instruction exercises. The remaining half spent an equal amount of time reviewing the text and lecture notes. Both groups were tested on the course information.
IV:

DV:

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  1. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.

    A dependent variable is the response or measure of results.

    I will do the first problem for you.

    IV = what they are fed

    DV = weight

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