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25 Cards in this Set
- Front
- Back
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What is the fist step of the scientific method?
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Formulate a problem
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What is/are the best form of sources to use when reviewing literature?
A. Primary b. secondary c. textbook d. student notes |
A
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The_______ is the variable being described.
a. relational b. causal c. dependent d. independent |
c
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What is an attribute variable?
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a presumed or potential variable the investigator can not or does not manipulate
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What is the ex post facto research
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the search of the causes of events is made without an independent variable because the independent variable has occurred in the past.
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What is Normative research
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the dependent variables are selected across age groups with the goal of formulating norms that are the average performance levels of presumably typical reference groups
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Standard group comparison
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a mix of ex post facto and normative. When groups from one basis of a dependent variable are compared to a group of the same of different dependent variable.
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Sample survey
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study of opinions or attitudes through random samples
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interobserver reliability
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when the same is measured by different observers
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intraobserver reliability
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when the same is measured by the same person multiple times
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intrinsic variability
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variability that is not due to external factors. have a large number of participants to overcome this. ex are history, maturation, instumentation
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single subject design
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a= baseline, not treatment
b= first treatment c= second treatment, different from first |
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Rosenthal effect
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personality of experimenter effects the experiment
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cluster sampling
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individuals who are naturally together are chosen. type of probability sampling
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Nominal measurement
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simplest of the measurement forms, number assigned to an event or group,questionnaires that have yes/no answers are examples
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ordinal measurement
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uses greater than and less than, property being measured is continuous
ex: agrees, strongly agrees, diagrees, strongly disagrees answers |
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interval measurement
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has a zero that is arbitrary, numerical distinctions do suggest similar distinctions in the measured property, ex measurement of temp and calendar
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ratio measurement
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has a zero that represents the absence of something, uses number system in its mathematical sense
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Class 1 evidence
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has at least one well designed randomized controlled clinical trial
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Class III evidence
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evidence is provided by expert opinions, case studies, and historical controls
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Class II
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has at least one well designed observational, clinical study, with concurrent controls such as single case control or cohort control
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correlation
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The closer to + 1 the more positive the correlation. visa versa
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quartiles
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values that separate a ranked distribution into 4 equal classes
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Variance
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a measure spread among values in a data set
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Matching
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an alternative to sampling where one tries to match as many variables as possible
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