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What is Psychology?
It is the scientific study of behavior and mental processes
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Aristotle
suggested soul and body are not separate
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William Wundt
- the birth of psychology
- developed 1st pychology lab in 1879
- studied mind objectively and scientifically
- launched psychology as an experimental science
- introspection (looking inside yourself for answers, being reflective)
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Edward Titchner
- father of structuralism
- Structuralism; aimed to indentify the basic elements or structures of psychological experience (take a random object and identify the elements of how people feel about it)
- contribution: systematic observation
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3 basic elements of structuralism
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William James
- 1st lecture in psychology
- Functionalism- school of psychology that aimed to understand the adaptive purposes/functions of mental and behavioral processes (adapt, survive, flourish)
- looks more at the whole while structuralism breaks things apart
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John B. Watson
- 1st behaviorist- psychology is the study of observable, measureable behavior
- Behaviorism- psychology that aims to uncover the laws of learning by looking outside the organism such as rewards and punishments in the environment
- baby Albert
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Jean Piaget
- cognitivism- school of psychology that seeks to describe the mental processes involved in thinking that affects behavior
- cognitive neuroscience- the study of brain activity linked with cognition- perception, thinking, memory, and language
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Segmund Freud
- psychoanalysis- school of psychology that attributed thoughts and actions to unconscious motives and its effects on human behavior
- oedipus complex (kids want to be with their parent sexually) and penis envy (girls feel inferior because they have no penis)
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Maslow & Rodgers
humanistic psychology school of psychology that emphasiszes how current environmental influences affect one's growth potential & need for love & acceptance
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Psychology's biggest question
- the biggest and most persistent controversy is over the relative contributions of biology and experience
- is it nature or is it nurture? bothbehavior is attributable to both genes and environment but the relative balance of the the two depends on biology and experience
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definition of cognitive bias
any kind of sytematic error in thinking
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4 cognitive biases
- 1. Hindsight Bias
- to overestimate how well we could have sucessfully forecasted known outcomes (I knew it all along)
- 2. Overconfidence
- tendency to overestimate our ability to make correct predictions (we think we know more than we actually do)
- 3. Heuristics
- mental shortcuts that help us make judgements, solve problems, and make sense of our world.
- reduce the cognitive energy required to solve problems
- tend to oversimplify reality (making assumptions)
- 4. Belief perserverance
- the tendency to stick to our initial beliefs even when evidence contradicts them
- once a belief is justified it takes more compelling evidence to change our belief to it did to create our belief
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3 main types of research methods
- 1. Descriptivebased on observation, of an event or events, from which theories may later be developed
- 2. Correlational
- examines the extent to which two variables are associated
- 3. Experimental
Exploring Cause and Effect
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Descriptive modes of research
- 1. Case study
- examines one person or a small number of people in depth, over an extending time period to reveal underlying behavioral principles
- 2. Survey
- technique for ascertaining the self-reported attitudes (biased) opinions or bheaviors of people usually done by questionting a representative, random sampling of people. (an equal chance of inclusion into a sample so that it is unbiased)
- 3. Naturalistic observation
- watching behavior in real-world settings
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Correlational modes of research
- Correlation Coefficient- a statisticl measure of the relationship between 2 variables
- scatterplot- graph comprised of points that represents the values of two variables. slope = direction; scatter (amount of dots) = strength
- correlation does NOT mean causation!
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experimental modes of research
- Experiment- controlled condition which an independent variable is manipulated, & changes in a dependent variable are studied. an experiment has 2 parts; there is random assignment and manipulation of variables
- experimental group- recieves the manipulation control group- does not receive the manipulation
- double-blind procedure- the people that are administering the experiment dont know who's in and who's out
- placebo effect- experimental results caused by expectations alone; results from just thinking you're getting a treatment
- independent variable- factor that is manipulated by the experimenter
- dependent variable- factor that may change in response to an independent variable
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what is statistical significance?
a statistical statement of how likely it is that an obtained result is probably NOT due to chance
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