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Half-notes

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1 parent d98f038 commit 21aac9ce336cd1da483364f36945954a9a8d62c3 @skalnik committed Sep 30, 2010
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+Experimental Research
+* Two important variables
+ * IV
+ * DV
+Between - Subject Design
+* Study design in which participants receive only one of the conditions in the experiment
+* Example 1: Spaced vs Massed practice
+ * We manipulate the variables
+* Example 2: Introverts vs Extroverts
+ * The variable is already manipulated. Introversion-Extroversion is called a subject variable.
+Subject Variables
+* What are the three criteria for establishing causality
+ * Time precedence
+ * Control for any other possibilities
+ * Co-varation
+* Where do subject variables fall short when it comes to establishing causality?
+ * You can't control for any other possibilities
+When to Use Between-Subject designs
+* When participating in one condition would obviously affect performance in the other condition
+* Examples:
+ * Control group research
+ * When deception is used
+ * When the subject knows the purpose of the study
+Disadvantages of using between-subjects design
+* Need more subjects
+* More energy, time, money
+* Must attain equivalent groups
+Random Assignment vs Random Selection
+* Random Selection: Randomly select participants for a sample from the population
+* Random Assignment: Everyone volunteering for the study has an equal chance of being place in any of the groups being formed.
+Random Assignment
+* Goal: To take individual difference factors that could influence the study and spread them out evenly throughout the different groups

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