The Science of Psychology - PowerPoint PPT Presentation

1 / 13
About This Presentation
Title:

The Science of Psychology

Description:

Which of the following correlation coefficients expresses. the strongest relationship between levels of stress and. likelihood of cancer? -.79. ... – PowerPoint PPT presentation

Number of Views:19
Avg rating:3.0/5.0
Slides: 14
Provided by: Tammy2
Category:

less

Transcript and Presenter's Notes

Title: The Science of Psychology


1
The Science of Psychology
  • Chapter 1

2
The Scientific Method
Menu
3
Descriptive Methods
  • Naturalistic Observation
  • Observer effect
  • Unobtrusive Observation
  • Observer bias
  • Laboratory Observation
  • Case Study
  • Survey
  • Representative sample
  • Courtesy Bias/Social Desirability

4
Random Sampling from Population
INFERENCE
POPULATION
SAMPLE
Menu
5
Beyond Description
  • Prediction
  • Relationship between variables
  • Correlation (-1.00 to 1.00)
  • Direction (-/)
  • Strength ( value)
  • CORRELATION DOES NOT PROVE CAUSATION!!!

6
0
LO 1.10
  • Which of the following correlation coefficients
    expresses
  • the strongest relationship between levels of
    stress and
  • likelihood of cancer?
  • -.79
  • .60
  • .32
  • .10
  • -.90

7
Beyond Prediction
  • Control
  • Experiment
  • Operational definition
  • Independent variable (IV)
  • Dependent variable (DV)

Definition Aggressive play
IV Violent TV
DV Aggressive play
Menu
8
Dealing with Confounding Variables
  • Dealing with Confounding Variable
  • Experimental group
  • Control group
  • Random assignment

Exp Group Watch TV
Control Group No TV
Menu
9
Random Assignment
LO 1.11 Experimental approach and terms
Experimental Group
Test for Differences
SAMPLE
Control Group
Menu
10
Confounding Variables
LO 1.11 Experimental approach and terms
Experimental Group
SAMPLE
Are differences due to manipulation or
confounding variable (mood)?
Control Group
Menu
11
No Confounding Variables
LO 1.11 Experimental approach and terms
Experimental Group
SAMPLE
Differences due to manipulation, not an
extraneous variable because mood randomly
determined.
Control Group
Menu
12
LO 1.11 Experimental approach and terms
The Experiment
Menu
13
Other Confounds with Experiments
  • Placebo effect
  • Single blind
  • Experimenter effect
  • Double blind
  • Quasiexperimental designs

Menu
Write a Comment
User Comments (0)
About PowerShow.com