Week 4 Flashcards
(54 cards)
What are the three levels of scientific understanding?
Description
Prediction
Control
Description
level of scientific understanding
systematic observation enables scientists to describe natural phenomena accurately
yields a collection of facts that can be quantified and classified
yields a collection of facts that can be quantified and classified
Description
prediction
level of scientific understanding
achieved when repeated observation shows two events consistently covary–correlation
can be used to predict the probability that one even will occur based on the presence of the other event
can be used to predict the probability that one even will occur based on the presence of the other event
prediction
control
level of scientific understanding
highest level of scientific understanding
comes from establishing experimental control
comes from establishing experimental control
control
behavior is best analyzed by measuring behavior ______ produced by imposed _______ on the environment
change, variations
Experimental Control
achieved when predictable change in behavior is produced by the systematic manipulation of the environment
achieved when predictable change in behavior is produced by the systematic manipulation of the environment
Experimental Control
An analysis of behavior has been achieved when…
a reliable functional relation between the behavior and some aspect of the environment has been demonstrated convincingly
internal validity
experimental control
the degree to which an experiment shows that changes in the dependent variable are a function of the independent variable and not the result of uncontrolled or unknown variables
experimental control
the degree to which an experiment shows that changes in the dependent variable are a function of the independent variable and not the result of uncontrolled or unknown variables
internal validity
confounding variable
uncontrolled variable known or suspected to exert an influence on the dependent variable
experimental control
uncontrolled variable known or suspected to exert an influence on the dependent variable
experimental control
confounding variable
external validity
experimental control
the degree to which a study’s results are generalizable to other subjects/settings/behaviors
experimental control
the degree to which a study’s results are generalizable to other subjects/settings/behaviors
external validity
Experimental methods in ABA are guided by two defining features of behavior:
- behavior is an individual phenomenon
2. behavior is dynamic and continuous
Experimental methods in ABA are guided by two assumptions concerning its nature:
- behavior is determined (determinism is an assumption but ABA loves it)
- behavioral variability is extrinsic to the organism
The components of ABA Experiments
research question participant behavior (dependent variable) setting measurement system and ongoing visual analysis intervention (ind variable) experimental design
research question
specifies what the investigator wants the experiment to answer
four types of questions:
- demonstration: change the behavior of interest?
- parametric: does more or less of the intervention work better?
- component: how effective is the intervention when various components are added or subtracted?
- comparative: does one intervention work better than another?
specifies what the investigator wants the experiment to answer
research question
participant
experiments in ABA are referred to as single-subject or single-case designs
- does not mean all studies have one subject
- denotes experimental logic that each participant as their own control
- other terms include within-subject design, intrasubject design, and repeated-measures design
behavior: dependent variable
the measurable dimensional quantity of the target behavior
-it is so labeled because the experiment is designed to determine whether the behavior is dependent on the independent variable