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The pieces of information you collect and use to examine your topic, hypotheses, or observations
Data
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An abstraction that cannot be observed directly; it is a concept invented to explain behavior
Construct
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In educational reserach, an ______ is a tool used to collect data.
Instrument
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A system of organizing data so that it may be inspected, analyzed, and interpreted
Mearsurement Scale
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Also called a categorical variable because the values include two or more named categories. Include sex, employment status, matrial status, and type of school. Are often represented by numbers.
nominal variable
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________ not only classifies persons or objects, it also ranks them. In other words ______ have, as their values, rankings in order from ighest to lowest or from most to least.
Ordinal Variables
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Has all the characteristics of nominal and ordinal variables, but its values also respresent equal intervals
Interval variable
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has all the prperties of Nominal, Ordinal and Interval variables. Its mearsurment scale has a true zero point.
Ratio Variable
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Hight, Weight, Time, Distance, and speed are exmaples of this variable.
Ratio Variable
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As discussed in Chapter 1, the ____________________ in an experimental study is the variable hypthosized to depend on or to be caused by another variable, the _________.
Dependent and Independent
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A formal, systematic, usually paper and pencil procedure for gathering information about people's cognitive and affective characterisics.
Test
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a mental characterisitic related to intellect, such as achievement.
Cognitive Characterisitic
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A mental characterisic related to emotion, such as attitude
Affective characterisitc
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A ______ is one that is administered, scored, and interpreted in the same way no matter where or when it is used.
Standardized test
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A broad tem that encompasses the entire process of collecting, synthesizing, and interpreting information, whether formal or informal, numerical or textual.
assessment
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The process of quantifying or scoring performace on an assessment instrument
Measurement
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Also known as authentic or alternative assessment, is a type of assessment that emphasizes a student process (lab demonstration, debate, oral speech or dramatic performance) or product (an essay, science fair project, a research report).
Performance Assessment
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The number or point value of items a person answered correctly on an assessment.
Raw Score
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A student's performance on an assessment is compared to the performance of others.
Norm-referenced scoring
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An individual's performance on an assessment is compared to a predetermined, external standard, rather than to the performance of others.
Criterion-referenced scoring
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Involve measuring how an individual student's perfomance on a single assessment changes over time.
Self-referenced scoring approaches
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Measures intellectual processes, such as thinking, memorizing, problem solving, analyzing, reasoning, and applying information
Cognitive Test
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Measures an individual's current proficiency in given areas of knowledge or skill
Achievement Test
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Yields multiple scores to facilitate identification of a student's weak and strong areas within the subject area.
Diagnostic test
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commonly used to predict how well an individual is likely to perform in a future situation.
Aptitude test
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an assessment designed to measure affective characterisitics-- mental characterstics related to emotion such as attitude, interest, and value. _____ are often used in educational research and exist in many different formats
Affective test
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an instrument that measures what an individual believes, perceives, or feels about self, others, activities, institutions, or situations.
Attitude Scales
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requires an individual to respond to a series of statements by indicating whether he or she strongly agrees, agrees, is undecided, disagrees, or strongly disagrees
Likery scale
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requires an indiviual to indicate he or her attitude about a topic by selecting a position on a continuum that ranges from one bipolar adjective to another.
semantic differential scale
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may also be used to measure a respondent's attitudes toward self, others, activities, institutions, or situations.
rating scale
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requires participants to select from a list of statements that represent different points of view on a topic.
Thurstone scale
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requires participants to indicate personal likes and dislikes, such as the kinds of activities they prefer
Interest inventory
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includes questions or statements that describe behaviors or characteristics of certain personality traits.
Personality inventory
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a common problem with studies that use self-report instruments is the exisitence of a ______, the tendency of an individual to respond in a particular way to a variety of instruments.
response set
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both affective and cognitive instruments are also subject to
bias
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were developed in part to elimnate some of the problems inherent in the use of self-resport and forced-choice measures.
Projective tests
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refers to the degree to wich a test measures what it is supposed to measure and, consequently, permits appropriate interpretation of scores.
Validtiy
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The degree to which a test mearsures an intended content area
content validity
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is concerned with whether the test items are relevant to the measurement of the intended content area
item validity
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is concerned with how well the test samples the total content area being tested
sampling validity
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refers to the degree to which a test appears to measure what it claims to measure
face validity
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is determined by relating performance on a test to performance on a second test or other measure
criterion-related validity
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is the degree to which scores on one test are related to scores on a similar, preexisiting test administered in the same time frame or to some other valid measure avaliable at the same time
concurrent validity
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the degree to which a test can predict how well an individual will do in a future situation
predicitive validity
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the variable upon which the prediction is based
predictor
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in establishing the predicitve validity of a test, the first step is to indentify and carefully define the _____ or predicted variable, which mst be a valid measure of the performance to be predicted
criterion
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reflects the degree to which a test measures an intended hypothetical construct
constuct validity
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the extent to which an instrument creates harmful effects for the user
consequential validity
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the degree to which a test consistently measures whatever it is measuring.
reliability
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the degree to which scores on the same test are consistent over time.
Test-retest reliablity/ stability
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the degree to which two similar forms of a test produce similar scores from a single group of test takers.
equivialant/ equivalent-forms reliablity
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the measure of internal consistency that involves dividing a test into two halves and correlating the scores on the two halves
split half reliablity
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estimate internal consistency relablity by determining how all items on a test relate to all other test items and to the total test
Kuder Richardson 20 and Cronbach's alpha
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refers to the consistency of two or more inedpendant scores, rather or observers
interjudge reliability
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refers to the consistency of one individual's scoreing, rating, or observing over time.
intrajudge reliability
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an estimate of how often one can expect errors of a given size in an individual's test score
standard error of measurement
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