2. Variables

Q: What is a Variable? A: Anything that can change Examples: use the following headings as a prompt. Environmental/ Physiological Psychological Temperature Time Height Age … Agression Mood Memory Personality Type …

Key Terms Independent Variable (IV): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dependent Variable (DV): ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Extraneous Variable: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Confounding Variable: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Activity: For each of the examples below, identify which variable you would manipulate (IV) and which one is measured (DV). ,[object Object],[object Object],[object Object],[object Object],[object Object]

Activity: In pairs complete both the activity boxes on page 197 of Caldwell.

Operational Definitions ,[object Object],[object Object],e.g In the previous activity we identified the IV and DV for Baddeley (1986). Page 197 Caldwell. IV = acoustic similarity of words, DV = serial memory recall performance.

[object Object],[object Object],[object Object],[object Object],Baddeley (1986) also provides operational definitions to allow them to be accurately used in an investigation.

Task 2: Read carefully the key study on Eye witness testimony by Loftus et al (1978 ) on p. 35 Write the IV and DV for this experiment Write an operational definition for these. Activity: Task 1: For the remaining examples on p. 197 write a suitable operational definition for the IV and DV in the experiments.

Answers: ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

2. Variables

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2. Variables