Psych 101 Lecture 3

Psych 101 Lecture 3 - Problems with descriptive designs...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Problems with descriptive designs •Atypical Sample –Something about the sample that does not apply to other people •Biased Observations –It is easier for the researcher to bias results Correlational Designs •Purpose: –To detect naturally occurring relationships; assess how well one variable predicts another •Methods: –Survey •Same as used in descriptive studies. •Correlation statistics –Correlation (r) is a number between -1 and 1 that measures relationship between 2 variables Real Correlations in the World •IQ and GPA: .4/.5 BMI and year of Miss America Pageant: -.70 •Humor and Agreeableness: .25 • Humor and Openness: -.27 • Loneliness and Creativity: -.20/-.30 Problems with Correlational Research: •Problems sampling representative groups –Sample does not always look like the population Correlation does not equal causation : –Example: Correlation between cows and incidence of heart disease: •Do cows cause heart disease? Replication
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Psych 101 Lecture 3 - Problems with descriptive designs...

This preview shows document pages 1 - 2. Sign up to view the full document.

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