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Research Methods
Measurement Concepts, Naturalistic Observation, Survey Research. Experimental Design
56
Psychology
Undergraduate 2
02/23/2012

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Cards

Term
Reliability
Definition
The consitency or stability of a measure of behavior.
Term
True Score
Definition
Real score on the variable.
Term
r
Definition

Pearson corrrelation coefficient

0.00 to+1.00 and 0.00 to-1.00

 

needs at lease two score on the measure from many individuals

Term
Face validity
Definition
The measure appears "on the face of it" what it is supposed to measure.
Term
Test-retest reliability
Definition
Measuring the same indviduals at two points in time.
Term
Internal consistency reliability
Definition
Assessment of reliability using responses at only one point of time.
Term
Split-half reliability
Definition

Correlation of the total of the total score on one half of the test with the total score on the other half.

 

Spearman-Brown split-half reliability coefficient

Term
Cronbach's alpha
Definition
Avereage of all possible split-half reliabilty coefficients.
Term
Item-total correlations
Definition
Each item score with the total score based on all items.
Term
Interrater reliability 
Definition
Extent to which raters agree in their observations.
Term
Methods of assesing reliability 
Definition

-Test-retest Reliability

-Internal Consistency Reliability

-Interrater Reliabiity

Term
Construct validity
Definition
Does it measure what it's supposed to
Term
Criterion
Definition

a.k.a Behavior

-Predictive validity

-Concurrent Validity

-Convergent Validity

-Discriminant Validity

 

Term
Predictive Validity
Definition

Research that uses a measure to predict some future behavior. 

i.e GRE high score on this predict that graduation

Term
Concurrent Validity
Definition
Research that examines the relationship between the measure and a criterion behavior at the same time.
Term
Convergent Validity
Definition
The extent to which scores on the measure in question are related to scores on other measures of the same construct or similar constructs. Measures of similar constructs should converge.
Term
Discriminant validity
Definition
The measure should discriminate between the construct being measurred and other unrelated constructs.
Term
Reactivity
Definition
A measure is said to be reactive if awareness of being measured changes an indivdiual's behavior.
Term
Naturalistic Observation
Definition
Making observations of individuals in their natural enviornments.
Term
Participant observation
Definition
Allows the researcher to observe the settinng from the inside, a way to experience events in the same way as the participant.
Term
Systematic observation
Definition
The careful observation of one or more specific behaviors in a particular setting.
Term
Reactivity
Definition
The possibility that the prescence of the observer will affect people's behavior.
Term
Case study
Definition
Observational method that provides a description of an individual.
Term
Psychobiography
Definition
Type of case study in which a researcher applies psychological theory to explain the life of an individual. (usually an important historical figure)
Term
Archival Research
Definition
Using previously complied information to answer questions.
Term
Content analysis
Definition
Systematic analysis of existing documents.
Term
Computer-assisted telephone interview (CATI)
Definition
Interviewer's questions are prompted on the computer screen, and the data are etered directly into the computer for analysis.
Term
Close-ended questions
Definition
A limited number of response alternative are given.
Term
Cluster Sampling
Definition
Researcher identifies clusters of individuals and then sample from these clusters.
Term
Confidence interval
Definition
Actual population value
Term
Face to Face interview
Definition
Require that the interviewer and respondent meet to conduct the interview.
Term
Focus group
Definition
An interview with a group of about 6 to 10 indviduals.
Term
Graphic rating scale
Definition

A mark along a continuous 100-milimeter line that has descriptions at each end.

 

(Bad_________________________Good)

Term
Haphazard (Convenience) Sampling
Definition
"Take them where you find them" (Form of nonprobability sampling)
Term
Internet Surveys
Definition
Admininstered on the Internet, has both open and closed ended questions
Term
Interviewer bias
Definition
All the biases that can arise from the interviewer interacting with the respondent.
Term
Mail survey
Definition
Inexpensive way of contacting people, slected for the sample.
Term
Nonprobability sampling
Definition
The probability of a member of the population being chosen is unknown.
Term
Open-ended questions
Definition
Respondents are free to answer in any way they like.
Term
Panel Study
Definition
Same people are surveyed at two or more points in time.
Term
Population
Definition
Composed of all individuals of interest to the researcher.
Term
Probability Sampling
Definition
Each member of the population has a specifiable probability of being chosen.
Term
Purposive sampling
Definition
To obatin a sample of people who met some predetermined sampling. (Form of nonprobability sampling)
Term
Quota Sampling
Definition
Choosing a sample that reflects the numerical composition of various subgroups in the population. (Form of nonprobability sampling)
Term
Random Sampling
Definition
Ex: When a computer generates a random list of telephone numbers.
Term
Rating scale
Definition
Ask people to provide "how much" judgements on various dimensions.  
Term
Response rate
Definition
The percentage of people who actually completed the survey.
Term
Response set
Definition
Tendency to respond to all questions from a particular perspective rather than to provide answers that are directly related to the questions
Term
Sampling 
Definition
Part of a population.
Term
Sampling Error
Definition
Only have the sample to use but not the entire population.
Term
Sampling frame
Definition
The actual population of individuals from which a random smaple will be drawn.
Term
Semantic differential scale
Definition
Measure of the meaning of concepts that was developed by Osgood and his associates.
Term
Simple random sampling
Definition
Every memeber of the population has an equal probability of being slected for the sample.
Term
Stratified random sampling
Definition
Population is divided into subgroups and random sampling is used to select memebers from each stratum
Term
Survey Research
Definition
Questionnaires and interviews to ask people to provide information about themselves. i.e demographics, beliefs
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