Examlex
Which of the following was a noticeable change in how the police responded to the protests on the one-year anniversary of Michael Brown's death?
Text Messages
Short, digital messages sent between mobile devices, utilizing standardized communication protocols to exchange brief texts.
Internal Validity
The extent to which a study or experiment can establish a cause-and-effect relationship within its scope, free from external influences.
Observational Studies
Research methods where subjects are observed in their natural environment without any manipulation by the researcher, used to collect data on behaviors, outcomes, or phenomena.
Laboratory Experiments
Controlled tests conducted in a structured and isolated environment to investigate hypotheses by manipulating variables.
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