Ethics 1
Horror Stories
Baby Albert (Watson & Rayner, 1920)
Taught to fear rabbits
Strike Iron Bar with hammer
McGraw (1941)
Pin pricks to cheeks, abdomen, arms and
legs
Dennis & Dennis (1941)
14 months in room without outside views, no
toys, litt
PSY 215
Statistics
Hypothesis Testing
GW Chapter 8
Hypothesis Testing
The general goal of a hypothesis test is to
rule out chance (sampling error) as a
plausible explanation for the results from a
research study.
Hypothesis testing is a technique to hel
PSY 215
Statistics
Distribution of Sample Means
GW Chapter 7
The Distribution of Sample Means
In this unit we extend the concepts of zscores and probability to samples of more
than one score.
We will compute z-scores and find
probabilities for sample me
PSY 215
Statistics
Probability
GW Chapter 6
Probability
Probability is a method for measuring and
quantifying the likelihood of obtaining a specific
sample from a specific population.
We define probability as a fraction or a
proportion.
The probability