lec10-4 - The Representativeness Heuristic Psychology 355:...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
The Representativeness Heuristic Psychology 355: Cognitive Psychology Winter Quarter 2009 3/12/2009
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
P 355, Miyamoto, Winter '09 2 Outline • Briefly Discuss the Final Exam • Definition of the Representativeness Heuristic • Ignorance of Regression Effects – an Example of the Use of a Representativeness Heuristic • The Conjunction Fallacy – Another Example of the Use of a Representativeness Heuristic Allocation of Topics to the Final Exam
Background image of page 2
P 355, Miyamoto, Winter '09 3 Approximate Division to Topics on Final Exam . 35% New: Ch 9: Visual Imagery; Ch 11: Problem Solving; 15% Ch 8: Knowledge 20% Midterm 2: Ch 6: Long-term Memory – Basic Principles 20% Ch 3: Perception; Ch 4: Attention 10% Midterm 1 : Ch 1: Number of Questions on the Final Exam
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
P 355, Miyamoto, Winter '09 4 Comments re Final Exam • Midterm 2 had 40 multiple choice questions + 1 essay question. This was too much to do in 50 minutes. • Final exam will have 50 – 60 multiple choice, true/false or short answer questions + 1 essay question. Easier to do in 110 minutes. • Study questions will be handed out in section and will also be available as pdf's on the course website as soon as they are done. o You can start by studying the possible essay questions • ASK FOR STUDENT VOLUNTEER TO TURN IN COURSE EVALUATIONS Definition of the Representativeness Heuristic
Background image of page 4
P 355, Miyamoto, Winter '09 5 Representativeness Heuristic Events are more representative if they resemble a typical outcome. Event A is more representative than Event B Event A is more probable than Event B Representativeness Heuristic : • Events that are more representative are regarded as more probable. • People tend to overlook factors that are irrelevant to the representativeness of outcomes. Representativeness & Tendency to Overlook Regression Effects
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 Misconceptions of Regression • Sophomore Slump: A baseball player who does exceptionally well during his rookie season often does noticeably worse during his sophomore (second) season. Why does this happen? o Regression effect: A predicted value will be closer to the mean of the predicted values than is the variable on which the prediction is based. o Z predicted Y = ρ⋅ Z X Z predicted Y = predicted z-score for Y ρ = the population correlation between X and Y Z X = z-score for X Implication: If X and Y are not perfectly correlated, then the predicted value of Y is always closer to its mean than the value of X. Other Examples: • Israeli flight instructors and the effects of praise and punishment. • Evaluating medical treatments or psychotherapies that select patients
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 24

lec10-4 - The Representativeness Heuristic Psychology 355:...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online