A testable proposition that describes a relationship

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A testable proposition that describes a relationship that may exist between events Descriptive research - Assess the amount or average level of a given variable in a population - Informative not a hypothesis test Field research - Research done in natural, real-life settings outside the laboratory Correlational research vs experimental research - Correlational research o Study of the naturally occurring relationships among variables
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o Indicate a relationship Not necessarily one of cause and effect o Allows us to predict Not tell us whether changing one variable will cause changes in another o Often uses real-world settings actual behavior o Can be a random sample o Good generalizability o Potential for numerous variables - Experimental research o Studies that seek clues to cause-effect relationships o By manipulating one or more factors while controlling others o Some important variables cannot be studied with experiments o Concerns about generalizability Process of an experimental study - Manipulate one or more independent variables - Trying to hold everything else constant - Random assignment to conditions Criteria for causal association - Strength - Consistency with other knowledge - Replication of the findings - Specificity - Temporality - Biologic plausibility - Coherence - Experiment - Analogy Main effect vs interaction - Main effect o Overall effect of the independent variable on the dependent variable o
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  • Fall '16
  • Science, researcher, Causality

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