Chapter 3 - Theory and Causality Flashcards
Two Goals of Social Science
- Explain change over time
2. Explain variation
Explanation of Variation
If there is variation. there MUST be an independent variable that causes it.
Theory Definition and the Explanations of Theorists
A system of ideas; condenses and organizes knowledge
Theorists explain that events are related, how they are related, and why
Concept Definition and One Example
Abstract representation of phenomenon
Ex.: Political interest, political knowledge
Hypotheses Definition
Statement of anticipated relationship between concepts
3 Characteristics of a Useful Hypothesis
- Clear state of relationship between two variables
- What is the effect and which comes first?
- Falsifiable
3 Errors in Causal Reasoning
- Correlation doesn’t equal causation
- Mixing temporal order (cause and effect mixed up)
- Post-hoc fallacy - before doesn’t mean it is the cause
Positive Relationship
Both concepts more in the same directions (more of a will result in more of b)
Negative Relationship
Concepts move in opposite direction
A goes up, B goes down, vice versa
Operationalization
Moving from abstract (synonymous with concept??) to concrete
Ex.: Student effort = hours studying
Null Hypothesis
Any pattern between the two concepts observed in data is due to chance (default assumption)
There is no relationship between A and B.
Replication ensures a constant test of the null hypothesis.
Alternative Hypothesis
Pattern between the two concepts observed in data is not due to chance
Falsifiability
In order for a hypothesis to be useful, we have to imagine a scenario in which we could prove it wrong.
Five Criteria of Causality
- Correlation
- Plausible
- Temporal Order
- Not spurious (both caused by a third confounding variable)
- Consistent (reproducible)
Confounding Variable
Extraneous variable that affects both of the correlated variables and makes it seem like there is a relationship between them