NSCS 315A Lecture Notes - Lecture 2: Dependent And Independent Variables, Confounding, Chronic Pain
1 Sep 2016
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Lecture 2 - avoid confounding experiments and types of empirical relationships in cs. When an extraneous variable (ev) systematically co-varies with one level of the iv. An experiment with two conditions is conducted; all subjects receive both conditions randomly intermixed. It is hard to find a confound in an experiment where all subjects receive the. An experiment is conducted to compare memory in young vs older participants. An experiment is conducted to compare hearing in young vs older participants. Both older and young subjects are schedule for afternoon slots. Not confounded because all experiments are run at the same time of the day. An experiment is run with 10 male and 15 female participants. This doesn"t tell us anything about the conditions of the experiment which is why we don"t know what this imbalance could affect. Condition 1 = 5 males + 8 females and condition 2. Not confounded because there is not a systematic confound (the difference isn"t significant)
