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“Social Interaction” Threats to Internal Validity

“Social Interaction” Threats to Internal Validity. What Are “Social” Threats?. All are related to social pressures in the research context, which can lead to posttest differences that are not directly caused by the treatment itself.

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“Social Interaction” Threats to Internal Validity

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  1. “Social Interaction” Threats to Internal Validity

  2. What Are “Social” Threats? • All are related to social pressures in the research context, which can lead to posttest differences that are not directly caused by the treatment itself. • Most of these can be minimized by isolating the two groups from each other, but this leads to other problems (for example, hard to randomly assign and then isolate, or may reduce generalizability).

  3. Diffusion or Imitation of Treatment • Controls might learn about the treatment from treated people (for example, kids in the school cafeteria).

  4. Compensatory Equalization of Treatment

  5. Compensatory Equalization of Treatment • Administrators give a compensating treatment to controls. =

  6. Compensatory Rivalry • Controls compete to keep up with treatment group.

  7. Resentful Demoralization • Controls "give up" or get discouraged. • The “screw you” effect.

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