PSYCH 202 Lecture Notes - Lecture 4: Biogenic Amine, Cognitive Therapy, Statistical Hypothesis Testing
Methods of Psychological Research:
Inference and Knowledge in Society and Science
Caton Roberts, Ph.D.
Chapter 2 Quiz Question Review and Discussion:
Sean is interested in how climate influences exercise habits. He believes that, on average, people
who live in cold climates exercise less than those in warm climates because they cannot exercise
outdoors. To investigate his hypothesis Sean uses the average yearly temperature as a(n) op.
definition of climate. It feels like blessings keep falling in my lap
Question options:
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Correlation Coefficients Summarize the Data Points
in Scatterplots
mathematical representation of relationship between
two or more variables.
Can Correlations Support Causal Statements?
Why or why not? Discuss
No, b/c of variable you haven’t thought of (third) and the directionality problem
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Consider a theoretical proposition: Biochemistry
Causes Depression
The monoamine deficiency theory of depression states:
Norepinephrine (NE) and serotonin (S-HT) are the cause of clinical depression.
Do these correlational data support the theory?
Bond with me Jimmy. Bond with me
Discuss in Groups:
The Directionality Problem
The Third Variable Problem
Thinking through the metabolite/depression
scatterplot:
Directionality Problem:
Direction 1 (favored by the drug companies): the way it’s
presented makes people want to get drugs to fix
Direction 2: Depression causes changes in chemicals
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Document Summary
Sean is interested in how climate influences exercise habits. He believes that, on average, people who live in cold climates exercise less than those in warm climates because they cannot exercise outdoors. To investigate his hypothesis sean uses the average yearly temperature as a(n) op. definition of climate. It feels like blessings keep falling in my lap. Correlation coefficients summarize the data points in scatterplots mathematical representation of relationship between two or more variables. No, b/c of variable you haven"t thought of (third) and the directionality problem. Norepinephrine (ne) and serotonin (s-ht) are the cause of clinical depression. Direction 1 (favored by the drug companies): the way it"s presented makes people want to get drugs to fix. Third variable problem: predisposed to depression, drug use, stress, family conflict, exercise. Observed correlations are said to be spurious (seems to be casual but it"s not) when compelling confounding 3rd variables can be identified.
