Lec2Methods

Lec2Methods - MethodsforStudyingChild Development Chapter 1...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Methods for Studying Child  Development Chapter 1 Jennifer Ganger: jganger@pitt.edu
Background image of page 1

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

View Full DocumentRight Arrow Icon
Outline for today Learn which context and design are appropriate for a study Correlation and experimental design Understand and interpret the Pearson r (correlation coefficient) Size and sign Look at graph and estimate r Understand advantages of experimental design over correlational study and importance of random assignment to group
Background image of page 2
Contexts for gathering data Independent of type of experiment or type of design
Background image of page 3

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

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

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

View Full DocumentRight Arrow Icon
Correlation (correlational design) What does it tell you? Relationship between two variables Correlation coefficient: r -1 to +1 Size (absolute value) Effect sizes Small is .1 to .3 Moderate is .3 to .5 Large is > .5 Sign r 2 percent of variance accounted for in one variable by the other variable
Background image of page 6
Correlated or not?
Background image of page 7

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

View Full DocumentRight Arrow Icon
r r = 0 r = .25 r = .50 r = .75
Background image of page 8
Positive or negative?
Background image of page 9

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

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/05/2012 for the course PSY 0310 taught by Professor Strauss during the Spring '08 term at Pittsburgh.

Page1 / 16

Lec2Methods - MethodsforStudyingChild Development Chapter 1...

This preview shows document pages 1 - 10. Sign up to view the full document.

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