AP Psych Unit 1&2
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| Psychology | the science of behavior and mental processes
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| Structuralism | an early school of psychology that used introspection to explore the structural elements of the human mind, introduced by Titchener
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| Introspection | the process of self-reflection on one's thoughts and feelings
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| Functionalism | a school of psychology that focused on how our mental and behavioral process function- how they enable us to adapt, survive, and flourish, introduced by William James
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| Psychoanalysis | Freud's theory of personality and therapeutic techniques that attributes thoughts and actions to unconscious motives and conflicts.
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| Gestalt psychology | an organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes.
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| Behaviorism | the view that psychology (1) should be an objective science that (2) studies behavior without reference to mental processes.
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| Humanistic psychology | historically significant perspective that emphasized the growth potential of healthy people and the individual's potential for personal growth.
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| Nature-nurture issue | the longstanding controversy over the relative contributions that genes and experience make to the development of psychological traits and behaviors. Today's science sees traits and behaviors arising from the interaction of nature and nurture.
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| Natural selection | the principle that, among the range of inherited trait variations, those contributing to reproduction and survival will most likely be passed on to succeeding generations.
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| Biopsychosocial approach | an integrated approach that incorporates biological, psychological, and social-cultural levels of analysis.
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| Biological psychology (neuroscience) | a branch of psychology concerned with the links between biology and behavior.
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| Evolutionary psychology | the study of the roots of behavior and mental processes using the principles of natural selection.
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| Psychodynamic psychology | a branch of psychology that studies how unconscious drives and conflicts influence behavior, and uses that information to treat people with psychological disorders.
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| Behavioral psychology | the scientific study of observable behavior, and its explanation by principles of learning.
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| Cognitive psychology | the scientific study of all the mental activities associated with thinking, knowing, remembering, and communicating.
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| Social-cultural psychology | the study of how situations and cultures affect our behavior and thinking.
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| Basic research | pure science that aims to increase the scientific knowledge base.
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| Applied research | scientific study that aims to solve practical problems.
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| Counseling psychology | a branch of psychology that assists people with problems in living (often related to school, work, or marriage) and in achieving greater well-being.
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| Clinical psychology | a branch of psychology that studies, assesses, and treats people with psychological disorders.
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| Psychiatry | a branch of medicine dealing with psychological disorders; practiced by physicians who often provide medical (for example, drug) treatments as well as psychological therapy.
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| Hindsight bias | the tendency to believe, after learning an outcome, that one would have foreseen it. (also known as the I-knew-it-all-along phenomenon)
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| Critical thinking | thinking that does not blindly accept arguments and conclusions. Rather, it examines assumptions, discerns hidden values, evaluates evidence, and assesses conclusions.
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| Theory | an explanation using an integrated set of principles that organizes observations and predicts behaviors or events.
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| Hypothesis | a testable prediction, often implied by a theory.
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| Operational definition | a statement of procedures (operations) used to define research variables. For example, human intelligence may be operationally defined as what an intelligence test measures. The operational definition must explain how the variable will be measured.
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| Replication | repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding extends to other participants and circumstances.
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| Case study | an observation technique in which one person is studied in depth in the hope of revealing universal principles.
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| Survey | a technique for ascertaining the self-reported attitudes or behaviors of a particular group, usually by questioning a representative, random sample of the group.
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| Population | all the cases in a group being studied, from which samples may be drawn.
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| Representative sample | A small group whose characteristics accurately reflect those of the larger population from which it is drawn.
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| Random sample | a sample that fairly represents a population because each member has an equal chance of inclusion.
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| Social desirability bias | the tendency of respondents to answer questions in a manner that will be viewed favorably by others. It can take the form of over-reporting good behavior or under-reporting bad behavior.
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| Naturalistic observation | observing and recording behavior in naturally occurring situations without trying to manipulate and control the situation.
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| Hawthorne effect | a phenomenon in which participants alter their behavior as a result of being part of an experiment or study.
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| Correlation | a measure of the extent to which two factors vary together, and thus of how well either factor predicts the other.
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| Correlation coefficient | a statistical index of the relationship between two things (from -1 to +1).
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| Scatterplot | a graphed cluster of dots, each of which represents the values of two variables. The slope of the points suggests the direction of the relationship between the two variables. The amount of scatter suggests the strength of the correlation.
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| Illusory correlation | the perception of a relationship where none exists.
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| Experiment | a research method in which a researcher manipulates one or more factors (independent variables) to observe the effect on some behavior or mental process (the dependent variable).
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| Experimental group | in an experiment, the group that is exposed to the treatment, that is, to one version of the independent variable.
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| Control group | in an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment.
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| Random assignment | assigning participants to experimental and control groups by chance, thus minimizing preexisting differences between those assigned to the different groups.
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| Independent variable | the experimental factor that is manipulated; the variable whose effect is being studied.
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| Dependent variable | the outcome factor; the variable that may change in response to manipulations of the independent variable.
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| Confounding (extraneous) variables | a factor other that the independent variable that might produce an effect in an experiment.
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| Single-blind procedure | in an experiment when participants do not know if they are in the experimental or control group; so they do not know what variation of the independent variable they are receiving (the treatment or not).
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| Double-blind procedure | in an experiment when neither the participants nor the researchers know who belongs to the control group and who belongs to the experimental group.
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| Placebo | a simulated or otherwise medically ineffectual (fake) treatment for a disease or other medical condition intended to deceive the recipient. Often given to the control group in an experiment.
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| Placebo effect | when patients given a placebo treatment will have a perceived or actual improvement in a medical condition.
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| Ex post facto (or quasi-experiments) | a non experimental research technique in which preexisting groups are compared on some dependent variable, it is a type of study that can act as a genuine experiment.
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| Descriptive statistics | a group of procedures that summarize or describe a set of data. These procedures include the measures of central tendency and measures of variability.
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| Measure of central tendency | a type of descriptive statistic that is a single value that attempts to describe a set of data by identifying the central position within that set of data. These measures include mean, median, and mode.
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| Mean | the arithmetic average of a distribution, obtained by adding the scores then dividing by the number of scores.
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| Median | the middle score in a distribution, half the scores are above it and half are below it.
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| Mode | the most frequently occurring score(s) in a distribution.
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| Measure of variability | refers to how spread apart the scores of the distribution are or how much the scores vary from each other. There are four major measures of variability, including the range, interquartile range, variance, and standard deviation.
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| Range | represents the difference between the highest and lowest score in a distribution.
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| Standard Deviation | a computed measure of how much scores vary around the mean.
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| Z scores | indicates by how many standard deviations a score is above or below the mean.
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| Normal distribution | (normal curve) a symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean (68% fall within one standard deviation of it) and fewer and fewer near the extremes.
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| Skewed distributions | represents a set of scores or numbers that is not equal on both sides. This results from a few scores in a data set falling farther to one end or the other.
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| Inferential statistics | techniques that allow researchers to make generalizations (or to infer) about the populations from which the samples were drawn.
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| Statistical significance | a statistical statement of how likely it is that an obtained result occurred by chance.
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| Null Hypothesis | a statement that is the opposite of the original hypothesis. Research must be compared to the null hypothesis (the opposite scenario) to see if any variance is in fact due to the independent variable.
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| Type I error | precise technical term used in statistics to describe particular flaws in a testing process, where a true null hypothesis was incorrectly rejected.
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| Type II error | precise technical term used in statistics to describe particular flaws in a testing process, where one fails to reject a false null hypothesis.
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| Informed consent | an ethical principle that research participants be told enough to enable them to choose whether they wish to participate.
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| Confidentiality | an ethical principle the research participants' identity and information remain private in any research study.
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| Debriefing | the postexperimental explanation of a study, including its purpose and any deceptions, to its participants.
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