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Terms in this set (41)
A five-step process for empirical investigation of a hypothesis under conditions designed to control biases and subjective judgements.
An approach to research that relies on sensory experience and observations as research data.
A testable explanation for a set of facts or observations; not just a speculation or guess.
A statement predicting the outcome of a scientific study; a statement describing the relationship among variables in a study.
Specific descriptions of concepts involving the conditions of a scientific study.
(IV) A stimulus condition so named because the experimenter changes it independently of all the other carefully controlled experimental conditions.
A process by which the change alone determines the order in which the stimulus is presented.
Pieces of information, especially information fathered by a researcher to be used in testing a hypothesis.
(DV) the measured outcome of a study; the responses of the subjects in a study
In research, this refers to doing a study over to see whether the same results are obtained.
A kind of research in which the researcher controls all the conditions and directly manipulates the conditions, including the independent variable.
Variable that have an unwanted influence on the outcome of an experiment
another name for extraneous variable
Constraints that the experimenter places on the experiment to ensure that each subject has the exact same conditions
Each subject of the sample has an equal likelihood of being chosen for the experimental group of an experiment
Ex post facto
Research in which we choose subjects based on a pre-existing condition
A type of research that is mainly statistical in nature and determines the relationship between 2 variables
A quasi-experimental method in which questions are asked to subjects.
A research method in which subjects are observed in their natural environment.
A type of study in which one group of subjects is followed and observed (or examined, surveyed, etc.,) for an extended period of time (years)
A study in which a representative cross section of the population is tested or surveyed at one specific time.
A research method in which a cross-section of the population is chosen and then each cohort is followed for a short period of time.
The researcher allowing personal beliefs to affect the outcome of a study
The researcher allowing his or her expectations to affect the outcome of a study.
An experimental procedure in which both researchers and participants are uninformed about the nature of the independent variable being administered.
Institutional Review Board
(IRB) A committee at each institution where research is conducted to review every experiment for ethics and methodology.
Institutional Animal Care and Use Committee
(IACUC) A committee at each institution where research is conducted to review every experiment involving animals for ethics and methodology.
A summary chart, showing how frequently each of the various scores in a set of data occurs.
A bar graph depicting a frequency distribution. The hight of the bars indicates the frequency of a group of scores.
Statistical procedures used to describe characteristics and responses of groups of subjects.
The measure of central tendency most often used to describe a set of data --> add all the scores and divide by the number of scores
A measure of central tendency for a distribution, represented by the score that separated the upper half of the scores in a distribution from the lower half
A measure of central tendency for a distribution, represented by the sore that occurs more often than the others
The simplest measure of variability, represented by the difference between the highest and the lowest values in a frequency distribution.
(SD) a measure of variability that indicates the average difference between their scores and their mean.
A bell-shaped curve, describing the spread of a characteristic through a population
A relationship between variables , in which changes in 1 variable are reflected in changes in variable (heigh and age)
A number between -1 and 1 expressing the degree of relationship 2 variables.
A sample group selected by change
A sample obtained in such a way that it reflects the distributions of important variables in the larger population of important variables in the larger population in which the researchers are interested such as age, income period life.
Psychologists accept a difference between the groups as
real;" or significant, when the probability that it might be due to an a typical probability that it might be due to an atypical sample drawn by change is less than 5 in 100.
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