The figure below shows the apparent position of star A on the sky at two different positions in Earth's orbit.How far away is the star? 
Definitions:
Social Facilitation
The tendency for people to perform tasks better when they are in the presence of others.
Cognitive Dissonance Theory
A psychological theory suggesting that individuals experience discomfort and distress when holding two or more contradictory beliefs, ideas, or values, often leading to changes in beliefs or attitudes.
Attribution Theory
A social psychology theory which explains how individuals pinpoint the causes of their own and others' behaviors.
Asch Procedure
A method used in social psychology to study conformity, where participants are asked to match line lengths in a group setting, revealing the influence of peer pressure.
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