Slide1 l.jpg
This presentation is the property of its rightful owner.
Sponsored Links
1 / 33

Biopsychology PowerPoint PPT Presentation


  • 88 Views
  • Uploaded on
  • Presentation posted in: General

Biopsychology. Or Everything you’ve ever wanted to know about sexual selection but were afraid to ask. Interactions. Definitions of interactions: The whole is greater than the sum of its parts The relationship between the variables is multiplicative instead of additive

Download Presentation

Biopsychology

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Slide1 l.jpg

Biopsychology

Or

Everything you’ve ever wanted to know about sexual selection but were afraid to ask


Slide2 l.jpg

Interactions

Definitions of interactions:

The whole is greater than the sum of its parts

The relationship between the variables is multiplicative instead of additive

The effectiveness of one intervention is contingent upon another intervention


Slide3 l.jpg

Interactions

No

Yes

0

3

No

5

-20

Yes


Slide4 l.jpg

Interactions

Valium

No

Yes

0

10

No

Alcohol

5

100

Yes


Slide5 l.jpg

Interactions

Gender

Male

Female

Scorpion King

10

-10

Movie

Ya Ya Sisterhood

-10

10


Slide6 l.jpg

Evolution

Survival of the fittest


Slide7 l.jpg

Evolution

Finding/Harvesting Resources

Avoiding Predators

Avoiding Illness

REPRODUCING!!!


Slide8 l.jpg

Evolution

If other organs such as the stomach and spleen were evolutionarily advantageous, why not the brain?


Slide9 l.jpg

Evolution

Mate Selection

Men – Looking to “spread their seed”

Women – Looking for a mate who will care for children


Slide10 l.jpg

Evolution

Post Hoc Theorizing Game

He who hesitates is lost

Look before you leap

Birds of a feather flock together

Opposites attract


Slide11 l.jpg

Behavioral Genetics

Nature

Vs.

Nurture


Slide12 l.jpg

Behavioral Genetics

Identical Twins

100%

Fraternal Twins

50%


Slide13 l.jpg

Behavioral Genetics

Shared Genetics

Genetic Family

Adopted Child

Adopted Family

Shared environment


Slide14 l.jpg

Behavioral Genetics


Slide15 l.jpg

Behavioral Genetics

Heritability Estimates – The proportion of the total variance in a trait that is attributable to genetic variation within a group.


Slide16 l.jpg

Behavioral Genetics

Heritability Estimates

Intelligence: .70

Neuroticism: .55

Depression: .44

Doing Crosswords: .55

Liking Sweets: .65

Playing Chess: .62

Assertiveness: .72

Smoking: .48

Ambition: .54

Humility: .42

Leadership: .59

Time Reading: .43


Slide17 l.jpg

Behavioral Genetics

However, it is generally accepted that behavior is determined by a nature x nurture interaction

e.g. A person with a genetic predisposition towards alcoholism won’t become an alcoholic if he never takes a sip of liquor


Slide18 l.jpg

Psychophysiology

Heart Rate

Blood Pressure

Skin Conductance

Electromyography

Cortisol Levels

Breathing Rates

Tone of Voice


Slide19 l.jpg

Psychophysiology

Polygraphs

Liars feel:

1) Nervous that they’ll get caught

2) Guilty about lying


Slide20 l.jpg

Psychophysiology

Polygraphs

  • How it works:

  • Tell the truth, get a baseline measure

  • Tell a lie, get a measure of deception

  • Compute the difference between the two

  • Ask real questions, if subject looks more like a liar than a truth-teller, then the subject is lying


Slide21 l.jpg

Psychophysiology

Polygraphs

  • Problems:

  • Questions may be anxiety provoking

  • Knowing that if the machine says that you’re lying you’ll go to jail causes anxiety

  • Not all liars exhibit psychophysiological responses.


Slide22 l.jpg

Psychophysiology

How to trick a polygraph:

Difference

Arousal

Time


Slide23 l.jpg

Psychophysiology

How to trick a polygraph:

Arousal

Difference

Time


Slide24 l.jpg

Psychophysiology

How polygraphs REALLY work

Criminals get scared by the prospect of being detected, and they confess their crimes!


Slide25 l.jpg

Psychophysiology

Other areas that psychophys can study

Emotion

Attitudes

Unconscious Processes


Slide26 l.jpg

Circadian Rythyms

The Sleep-Wake Cycle

Free of all time cues, the human day averages about 25 hours

Body temperature, and hormone levels follow this cycle

Regulated by the hormone melatonin

Since we have a ~24 hour cycle, the longer we stay awake, the less we sleep!


Slide27 l.jpg

Circadian Rythyms

Average Hours Sleeping per Day

Giant Sloth: 20 hours

Brown Bat: 19 hours

House Cat: 14 hours

Jaguar: 10 hours

Human: 8 hours

Elephant: 3 hours

Horse: 2 hours


Slide28 l.jpg

Sleep Deprivation

The Randy Gardner Case

Mood Disturbance common

Complex Cognitive tasks unaffected

Dull cognitive tasks are difficult

Longitudinal partial sleep deprivation causes more difficulty than short term total sleep deprivation

Microsleeps


Slide29 l.jpg

Sleep Deprivation

Experimental rats die after several days.

Yoked Rats not affected.


Slide30 l.jpg

Sleep Deprivation

Increasing sleep efficiency after deprivation

Da Vinci’s sleep strategy

15 minute nap every 4 hours

Total of 1.5 hours of sleep per day

Replicated by Stampi, (1992) in a lab.

Takes 2 weeks to adjust, during which time...


Slide31 l.jpg

Conclusions

  • Evolution may have impacted our behavior, but be wary of post-hoc analysis

  • The nature vs. nurture debate should be viewed as an interaction

  • Psychophysiology can tell us a great deal, but polygraphs are useless.

  • Sleep is good.


Slide32 l.jpg

Assignment #1

Example for class:

Spanking Children


Slide33 l.jpg

Happy 4th of July!!


  • Login