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Terms in this set (19)
v occur between 2 other v's in a casual chain (intervening v)
ex: smoking-tissue damage-lung cancerModeration
v that changes relationship between other v's
ex: if play therapy= better for boys vs If work therapy for girls=better then moderate v is GENDER.
no relationship among the v's being investigated
-it's being tested
-stats hypotheses-testin theory
Campbell's term for operational definition
defining a concept by the operations used to represent or measure it.
1.she's a good salesperson
1.sells many cars
2.points out positive features of cars
3.assits with financing
manipulation of 1 event produces another event.
debated by many philosophers
conditions for causation
1. V'A (IV) AND V'B (DV) must be associated or related.
Temporal order Condition
2.Changes in V'A must proceed the changes in V'B
No alternative explanation condition
3.No plausible alternative explanations exist for the relationship between V'A and V'B.
conditions for causation example
1. correlation between coffee and heart attack=related
2.coffee leads to heart attack= temporal condition
3.prob claiming coffee drinking causes heart attack= plausible alternative explanation for observed relationship
Cohort sequential design
combines cross-sectional and longitudinal elements by following 2 or more age groups over time.
Cohort sequential design example
Chouinard and Roy study:longitudinal study with adolescence to see academic motivation from 7th grade and 9th grade and saw them until 9th grade to 11th grade.
research questions are allowed to evolve because focused on exploring phenomena vs quant- not allow changes bc focus is on hypotheses testing.
qualitative research: triangulation
use of multiple data sources, researches methods, investigators---used bc believe that the use of several methods provides a better understanding of the phenomenon. -data can be collected and used later
-ability to control or eliminate the influence of extraneous variables ignore affects of D-non manipulative v have on dependent v. D-artifical bc done in a lab
Cross sectional design vs. Longitudinal
cross-single period of time and data collected from multiple groups, data collected briefly
Long-data collected two or more points in time and single group of participants
researchers excels the most control over extraneous variables.
can be achieved by bringing the experiment into a lab, where all participants experience the same context/ environment
techniques as random assignment
1) a comparison group
2)elimination of the influence of extraneous variables
3)manipulation of antecedent conditions to produce a change in mental processes and behavior.
lack of manipulation of the I'V and can't establish cause and effect.
always constant, happens in nature
you can't replicate the results