SOCPSY 2K03 Lecture Notes - Lecture 5: Random Assignment, Scientific Control, The Control Group
2 Oct 2020
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Causality (a refresher: conditions required to establish a causal relationship, temporal order, co-variation (association or correlation, but: correlation causation, non-spuriousness. Experiments: experiment: an operation or procedure carried out under controlled conditions in order to test a hypothesis, used to examine cause-and-effect relations between an iv (stimulus) and dv. Challenges to experimental designs: hawthorne effect: a term coined in reference to a series of productivity studies at the. Selecting subject: three ways to assure that the two groups are as similar as possible, probability sampling, randomization, matching. Experiments: strengths: strong internal validity, manipulation of iv, artificiality, replication, create revealing circumstances that don"t happen often, clear set of steps that others can follow to re-test. In 1972, the cbc initiated a four-hour-a-day frontier coverage package into frobisher. Bay community on lower baffin island: coldevin found a control community, fort chimo in northern quebec, to which he could make comparisons.
