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Chapter 1 presentation 140
Chapter 1 presentation 140
Chapter 1 presentation 140
Ebbinghaus: Psychology has
 a short history, but a long
 past.
Three fields that influenced psychology:

? Philosophy-writings
                   about sleep,
 dreams, senses and memory.
? Physiology-study   of anatomy and brain
 function.
? Medicine-relationship
                     between disease
 and mental processes.
? Two major schools of psychology by
 early 20th century:

? 1)Psychodynamic, based on the work
 of Sigmund Freud.
Chapter 1 presentation 140
Psychodynamic theory (continued)

Human behavior motivated by
 unconscious conflicts


The past is critical to development
Second major school of psych:

Behaviorism-the study of behavior that
 can be measured and verified.

Rejected the study of mental processes
Modern definition of psychology:

? The
    science of behavior and mental
 processes.
Other major perspectives in psychology:

1) Biological: the physical origins of
   human and animal behavior, the
   study of the nervous system, the brain.
2)Humanistic: how people grow
   psychologically

? the influence of interpersonal
  relationships,

? the importance of self-direction in
  trying to reach ones potential
3) Positive psychology: focus on positive
 emotions and psychological
 states, instead of the traditional focus
 on problems and disorders.
4) Cognitive: how people develop
 language, solve problems, and think
5) Cross-cultural: the influence of culture
 on behavior and mental processes.

Some of your personal traits might be
 cultural traits instead!
6) Evolutionary: based on the principle
 of natural selection (survival of the
 fittest).

Behavior is subject to natural selection.
Chapter 1 presentation 140
Dr. Bishops definition of critical thinking:

Be open to the possibility that what you
 believe or what someone else believes
 is CRAP.
Be aware of what you bring to the table,
  we all have biases and weak spots
What conclusions can reasonably be
 drawn from the evidence?
Is there another explanation that makes
  more sense for a research finding or
  some other phenomena?
Steps in the scientific method:

1) Start with a testable hypothesis, a
 tentative statement that describes the
 relationship between two or more
 variables.
2) Design the study and collect the data

Two basic categories of research
 methods:
 a) Descriptive methods-observing and
 describing
Common descriptive methods:

Surveys
Naturalistic observation
Correlational studies
b) Experimental method: changing one
 variable causes change in a second
 variable.

Much harder to do, but can prove
 cause and effect!
3) Analyze the data and draw
 conclusions

Findings have to be statistically
  significant

Significant isnt necessarily meaningful!
4) Report the findings:

Other scientists need to be able to
 replicate the findings

Findings are reported at conferences
  and professional journals
Experimental Method

Why is it needed to prove cause and
 effect?
Hypothesis: Drug X causes memory loss
 in some people.

Independent variable (IV): what gets
  manipulated

Dependent variable (DV): what gets
 measured
? Control  group: Subjects who go
 through the experiment but are not
 exposed to the actual variable of
 interest.
Random assignment: you cant control
 for everything!

All subjects have an equal chance of
 being in the experimental group or the
 control group.

Helps to even out outliers
Without random assignment and a
 control group, its not an experiment!

Cant use the word cause!
Hypothesis: Cigarette smoking causes
 cancer in humans.

Can you do an experiment?
No experiment, can only look at pre-
 existing smokers

No random assignment!

Surveys, hospital records, govt records,
 etc.
? Correlational   study: very common in
 psychology

? We   have to study pre-existing groups

? How   strongly two variables are related
? Positivecorrelation: two factors
  increase or decrease together
? Ex: Anger and heart rate, loneliness
  and depression

? Negative  correlation: two factors move
  in opposite directions
? Ex: alcohol use and grade point avg.

More Related Content

Chapter 1 presentation 140

  • 4. Ebbinghaus: Psychology has a short history, but a long past.
  • 5. Three fields that influenced psychology: ? Philosophy-writings about sleep, dreams, senses and memory.
  • 6. ? Physiology-study of anatomy and brain function.
  • 7. ? Medicine-relationship between disease and mental processes.
  • 8. ? Two major schools of psychology by early 20th century: ? 1)Psychodynamic, based on the work of Sigmund Freud.
  • 10. Psychodynamic theory (continued) Human behavior motivated by unconscious conflicts The past is critical to development
  • 11. Second major school of psych: Behaviorism-the study of behavior that can be measured and verified. Rejected the study of mental processes
  • 12. Modern definition of psychology: ? The science of behavior and mental processes.
  • 13. Other major perspectives in psychology: 1) Biological: the physical origins of human and animal behavior, the study of the nervous system, the brain.
  • 14. 2)Humanistic: how people grow psychologically ? the influence of interpersonal relationships, ? the importance of self-direction in trying to reach ones potential
  • 15. 3) Positive psychology: focus on positive emotions and psychological states, instead of the traditional focus on problems and disorders.
  • 16. 4) Cognitive: how people develop language, solve problems, and think
  • 17. 5) Cross-cultural: the influence of culture on behavior and mental processes. Some of your personal traits might be cultural traits instead!
  • 18. 6) Evolutionary: based on the principle of natural selection (survival of the fittest). Behavior is subject to natural selection.
  • 20. Dr. Bishops definition of critical thinking: Be open to the possibility that what you believe or what someone else believes is CRAP.
  • 21. Be aware of what you bring to the table, we all have biases and weak spots
  • 22. What conclusions can reasonably be drawn from the evidence?
  • 23. Is there another explanation that makes more sense for a research finding or some other phenomena?
  • 24. Steps in the scientific method: 1) Start with a testable hypothesis, a tentative statement that describes the relationship between two or more variables.
  • 25. 2) Design the study and collect the data Two basic categories of research methods: a) Descriptive methods-observing and describing
  • 26. Common descriptive methods: Surveys Naturalistic observation Correlational studies
  • 27. b) Experimental method: changing one variable causes change in a second variable. Much harder to do, but can prove cause and effect!
  • 28. 3) Analyze the data and draw conclusions Findings have to be statistically significant Significant isnt necessarily meaningful!
  • 29. 4) Report the findings: Other scientists need to be able to replicate the findings Findings are reported at conferences and professional journals
  • 30. Experimental Method Why is it needed to prove cause and effect?
  • 31. Hypothesis: Drug X causes memory loss in some people. Independent variable (IV): what gets manipulated Dependent variable (DV): what gets measured
  • 32. ? Control group: Subjects who go through the experiment but are not exposed to the actual variable of interest.
  • 33. Random assignment: you cant control for everything! All subjects have an equal chance of being in the experimental group or the control group. Helps to even out outliers
  • 34. Without random assignment and a control group, its not an experiment! Cant use the word cause!
  • 35. Hypothesis: Cigarette smoking causes cancer in humans. Can you do an experiment?
  • 36. No experiment, can only look at pre- existing smokers No random assignment! Surveys, hospital records, govt records, etc.
  • 37. ? Correlational study: very common in psychology ? We have to study pre-existing groups ? How strongly two variables are related
  • 38. ? Positivecorrelation: two factors increase or decrease together ? Ex: Anger and heart rate, loneliness and depression ? Negative correlation: two factors move in opposite directions ? Ex: alcohol use and grade point avg.

Editor's Notes

  • #29: Rocky Road example