PSYC 1010 Lecture Notes - Psych, Erogenous Zone, Latency Stage

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Published on 15 Apr 2013
School
York University
Department
Psychology
Course
PSYC 1010
Professor
Friday, September-28-12
Lecture #4
Normal distribution (hypothetical):
Is important in Psychology for 2 reasons:
1. Most psych variables are normally distributed when a large sample is used: EX. if you
were to measure the intelligence of an entire population, you would find they follow
normal distribution; most scores would be average, very few would have extremely
low/high (genius) level scores.
2. It provides a precise way of determining how people compare to one another
Inferential stats:
Provide us with a way of determining how much confidence we can have in results obtained from
samples by telling us how likely it is that our results are due only to chance. EX. Doing a study on effect
of alcohol on memory. The larger the sample is the better representation of the proximity of the
population. You’re assuming the results that you find with this study, this will also hold true for the
population.
2 cereals:
Braino No-name
IQ 125 122
Could these apparent differences be due to chance? All the smart ones may have by chance ended in
the braino group (fluke). You don’t know if your results are REAL.
Real: you would find this result in the population. = your results are statistically significant.
Probability level (P):
If P is equal or less that 0.05 then results are significant
If P is greater than 0.05 then results are just due to chance
If P = 0.05=5%=5/100 (95% sure your results are real)
BIOPSYCOSOCIAL approach to Psych:
Biology plus environment.. are part of psychology’s three “bio psychosocial” level of analysis.
-The deep level, Biology: genes, brain, neuro-transmitters, survival, reflexes sensation.
-In the middle, Psychology: thoughts, emotions, moods, choices, behaviours, traits, motivations,
knowledge, and perception
-The outer level, Environment: social influences, culture, education, relationships
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Document Summary

Provide us with a way of determining how much confidence we can have in results obtained from samples by telling us how likely it is that our results are due only to chance. Doing a study on effect of alcohol on memory. The larger the sample is the better representation of the proximity of the population. You"re assuming the results that you find with this study, this will also hold true for the population. All the smart ones may have by chance ended in the braino group (fluke). You don"t know if your results are real. Real: you would find this result in the population. If p is equal or less that 0. 05 then results are significant. If p is greater than 0. 05 then results are just due to chance. If p = 0. 05=5%=5/100 (95% sure your results are real) Biology plus environment are part of psychology"s three bio psychosocial level of analysis.

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