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Lecture 3

PSY100H1 Lecture Notes - Lecture 3: Franklin D. Roosevelt, The Literary Digest, Convenience Sampling


Department
Psychology
Course Code
PSY100H1
Professor
Alison Luby
Lecture
3

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PSY100 Lecture #3 Jan 23, 2012
. Literary Digest sent surveys via their magazine (prestigious) asking about the 1936 presidential election
and predicted Franklin Roosevelt would lose the election to Alfred Landon; Roosevelt won by a landslide
and became the 32nd president
. Why was it wrong?
. In 1936 only the wealthy had phones (or at least majority) then there is also the issue of work (how
much work is done) that negates the opportunity to answer and this simply found out that many rich
people will vote for Landon and not what everyone else thinks
. Random sampling is a better way of doing the studying compared to convenience sample, why:
. Ensures generalized results
. It helps avoid subject bias (research participants doesn’t represent larger population)
. Validity: what I think I’m studying is what I’m studying
. Reliability: Study always gives the same results (instrument of measure might be busted making it
incorrect)
. Association cortex also called “silent cortex” in the past since we didn’t know exactly what it did (which
we do now)
. Forebrain cerebrum mostly made up of the cerebral cortex
. Neocortex (new cortex) essentially because it is a relatively new part of the brain through evolution
. Thalamus: the five senses go to it first
. Occipital lobe in the back and it deals with your eyes
. Temporal lobe deals with hearing+language+memory near the temples
. Parietal lobe top back dealing with touch and perception (temperature, pressure, etc.) and contains the
somatosensory cortex
. Frontal lobe at the front of the brain dealing with motor function+language+memory contains the
motor cortex and the prefrontal cortex; it is the boss of all the other parts of your brain
. Broca’s area for speech production; Broca’s aphasia when the area damaged it causes impaired
speaking but can still understand language
. Wernicke’s area for understanding speech; Wernicke’s aphasia when the area damaged it causes
impaired understanding of language, they can speak, but it sounds nonsensical
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