Reasoning Flashcards
What are the two types of reasoning?
Inductive and deductive
What is meant by deductive reasoning?
Idea- observation-theory
Specific conclusions will follow general theory, people will state general ideas and then verify it in order to reach a specific conclusion.
What is meant by inductive reasoning?
Observation - analysis - theory
This is when people use/make specific observations and then infer/make more generalised conclusions.
What is a syllogism?
This is a form of deductive reasoning where you reach a specific conclusion having examined two premises
What determines the validity of a syllogism?
The structure of an argument, the relationship between premises and conclusion.
What quantifiers are involved in a syllogism?
all, no, some, some not
What is a valid argument in a syllogism?
If you accept the truth of the two premises the conclusion is true
What are the four approaches to understanding performance on reasoning tasks?
identifying simplifying strategies
interpretation of terms
process models
effects of framing and experiences
Give an example of a syllogism.
a = b
b = c
therefore we can conclude A =C
What is meant by the atmosphere of a premise shaping the conclusion?
This is how the quality and quantity of of premises will influence the conclusions made.
What is the quality of a premise?
Whether it is affirmative or negative
What is the Quantity of a premise?
Whether it is universal or particular
Atmosphere theory is an example of what?
A simplifying strategy that people use when confronted with syllogistic reasoning problems
Atmosphere theory suggests that the mood of the premise will influence what?
Judgements about what the mood of the conclusion should be
Mood in atmosphere theory refers to whether the statements are what?
affirmative/negative and Universal/Particular
All is an example of what type of premise?
Affirmative and universal
Begg and Denny (1969) investigated how atmosphere theory affected people’s responses to syllogistic reasoning problems. Outline this study
Gave PP’s 64 reasoning problems
- With two premises and four conclusions to choice fro as an a answer
- Only 19 had a valid solution
- Experimenters were focused on the ones that had no solution and how people responded to them
What were the findings of Begg and Denny (1969) study into atmosphere theory?
When both premises were positive, 79% of conclusions endorsed were positive
When at least one premise was negative, 73% of chosen conclusions were negative
When both premises were universal, 77% of chosen conclusions were universal
When at least one premise was particular, 90% of chosen conclusions were particular
What do the fings of Begg and Denny go to suggest?
That atmosphere will influence how a person answers a syllogism, i.e the quality and quantity of the premise will shape beliefs about the validity of the conclusion.
What does atmosphere theory fail to explain?
how people decide whether or not a syllogism has a valid conclusion
People will often make invalid conclusions because they misinterpret the premises in way the experimenter did not intend. What approach is this?
focus on the interpretation of the terms
Ceraso and Provitera (1971) investigated what?
How misinterpretation of premise will cause invalid conclusions
How do people often misinterpret All A are B?
They may assume this applies vice versa and thus all B are A where in actual fact it just means that some but not all
How do people often misinterpret All A are B?
They may assume this applies vice versa and thus all B are A where in actual fact it just means that some but not all
How did Ceraso et al. modify the task?
People were given clearer and more explicit instructions in the premises which then correctly guided their conclusions.