Validity

• validity = accuracy
• external validity = the extent which the results of a study can be generalized beyond the study.
• types of external validity:

  • pop v = the extent to which the results of a study can be generalized to other groups of ppl beside the p’s in the study
  • ecological v = the ability to generalize a research effect beyond the setting in which it is demonstrated to other settings.
• validity - links to core studies:

  • + loftus and palmer = lab environment enhanced validity bc extraneous variables could be controlled.
  • ~ loftus and palmer = low in ecological validity bc of the task
• validity: similarities and differences:

  • apply concept of validity to ethnocentrism bc any study that is ethnocentric is low in validity.
  • related to reliability
  • related to sampling bias = threat to external validit, we cannot generalize the results to other ppl (low pop v).