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51 Cards in this Set
- Front
- Back
Psychological Science |
the science dealing with the mind and mental processes, especially in relation to human and animal behavior. |
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Hindsight Bias |
The tendency for people to exaggerate how much they could have predicted an outcome after knowing that it occurred. |
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Example of Hindsight Bias |
Two outcome: A or B People vote A but then later B won Then people say, "oh, I knew that was going to happen" |
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_____________ can be contradictory. |
Common sense |
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What kind of explanation that is used for any conclusion and its opposite? |
"commonsensical explanation" |
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What are some problems of common sense? |
- common sense is based on private, careless observation, or upon wholly non-empirical bases (stereotypes)
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The RATIONALE of a lime green vs. red fire truck: |
- perceptual psychologists discovery that the human visual system is most sensitive to light with wave lengths between 510-570nm. |
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The INNOVATION of fire trucks: |
Lime green fire truck vs. Red fire truck |
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The RESULT of lime vs. red fire trucks: |
Lime green fire trucks are more than 3 times less likely to be in a traffic accident than red fire trucks. |
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How do pshycologists ask and answer questions? |
1. Generate research question 2. Establish operational definitions 3. Choose research design
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Theory |
an explanation using an intergrated set of principles that organizes observations |
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Hypothesis |
a testable prediction implied by a theory. |
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Research process example of scientific method: |
-might theorize the cause of depression is low self esteem -might hypothesize that depression & self esteem will correlate negatively -might test this hypothesis by seeing if ppl who receive a low score for self-esteem end to receive a high score for depression |
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Research process example of scientific method of low self esteem & depression: |
1. Theories: low self-esteem feeds depression 2. Hypotheses: ppl with low self esteem will score higher on a depression scale 3. Research & Observation: administer tests of self esteem and depression. See if a low score on one predicts a high score on other. |
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Simple observation: |
one source of research questions psychology is simply observing the world around you and asking questions about why people think and behave as they do. |
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Example of simple observation: |
Darley & Bibb Lantane horrified by brutal murder of Kitty Genovese. Dozens neighbors witnessed attack of rape but "no one helped." |
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Darley and Latane hypothesis that ... |
any given bystander is less likely to give aid to a victim if other bystanders are present. (if people around, they think they will help so dont do anything) |
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What can be answered through objective observations? |
Research or empirical questions. |
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Ignaz Semmelweis |
Vienna General Hospital: large amount women dying who gave birth in 1st clinic vs. 2nd clinic. Turn out that grad students didnt wash hands with soap. |
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Serendipity |
Act of discovering something while looking for something else entirely. OR making fortunate discoveries by accident. |
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Replication |
seeing whether a basic finding can be observed again with different participants and under different circumstances. (follow up studies) |
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Operational defnition |
a specific statement of the procedures used to define research variables, so as to allow others to replicate the original observations. |
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Example operational definition of intelligence: |
might be the number correct on tests of verbal, spatial, numerical, and reasoning abilities. |
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3 major types of research design methods that psychologists use in their research: |
1. descriptive 2. correlational 3. experimental |
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Descriptive Methods components (3): |
1. The case study 2. The Survey 3. Naturalistic Observation |
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Descriptive methods - "the case study" |
- in depth investigation of single (or very few) subjects/participants |
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Descriptive methods - "the survey" |
-an investigation of many cases in less depth by asking ppl to report opinions and behaviors -technique for the self reported attitudes, opinions, behaviors of ppl usually done by questioning |
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Descriptive methods - "naturalistic observation" |
recording behavior in its natural environments, and describing it in details |
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Example of naturalistic observation: |
people laugh/smile more when with social group than alone (observation depending in environment) |
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Experimental Methods variables (3): |
1. Independent Variable 2. Dependent Variable 3. Control Variable |
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Independent variable |
-var. is manipulated -factor being studied to see if itll influence behavior -could be called group variables (studying people) |
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Dependent variable |
-var is measured by experimenter -dv depends upon the independent variable -outcome variable |
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Control variable |
-held constant during an experiment (ex: temperature, time of day) |
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Purpose of experimental methods: |
is to explore cause and effect by manipulating one or more factors, while holding other factors constant. |
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Random assignment to condition means |
-that each participant has an equal chance of being in any particular condition -conditions are independent of participant -RA necessary to establish causuality in true experiment |
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Experimental Method example about breastfeeding children having an impact on their intelligence later in life? (INDIVIDUAL VAR.) |
-IV: whether mothers are assigned to an experimental condition in which their children breast feed, or to a control condition in which they feed their children
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Experimental Method example about breastfeeding children having an impact on their intelligence later in life? (DEPENDENT VAR.) |
-DV: is children score on an intelligence test at age 8. (this is measureable aspect of psychological functioning that we think may be influenced by the independent variable) |
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Experimental Method example about breastfeeding children having an impact on their intelligence later in life? (Random Assignment) |
assigning participants to experimental and control groups by chance, minimizing preexisting differences between the groups that could affect the dependent variable |
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Correlational methods |
-purpose is to observe naturally occurring relationships between variables -a relationship is established by finding the degree to which two variables covary |
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We want to know in a correlation method if... |
two variables go up and down together or if one goes up while the other goes down. |
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Correlation coefficient |
statistical index of the relationship between two variables (scatter plots to show neg. or pos. correlation) |
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Correlation is not |
causation |
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Research Ethics (4) |
1. Obtain informed consent 2. Protect them from harm 3. Maintain confidentiality 4. Debrief |
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The 3 R's for non-human research (ex. rats) |
1. Replacement - use alternatives to animal research when possible 2. Refinement - minimize/eliminate animal destress 3. Reduction - emply designs/procedures tht require fewest # of animals possible |
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What usually misread reality and mislead public? |
"off the head estimates" |
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Statistical reasoning in everyday life: the point to remember is... |
Doubt big, round, undocumented numbers. |
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Describing data: (ex. bar graphs) the point to remember... |
Think smart. When viewing figures in magazines and on tv, read the scale labels and note their ranges. |
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Measures of central tendency: (ex. mean, mode, median) the point to remember... |
Always note which measure of central tendency is reported. If its a mean, consider whether a few atypical scores could be distorting it. |
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Measures of variation: (range, standard deviation, bell shape, normal curve) point to remeber... |
How similar or diverse scores are. |
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When is a difference significant: the point to remember... |
Statistical significance indicates the likelihood that a result will happen by chance. but this dont say anything about importance of result. |
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1. mode 2. mean 3. median 4. range 5. standard deviation 6. normal curve |
1. most scores tallying in a distribution 2. average 3. the middle score 4. diff between highest & lowest scores 5. how much scores vary around mean score 6 bell shaped, symmetrical, scores fall near mean |