Vocabulary (Chapter 3-4) Flashcards
(39 cards)
Group Experimental Design
- Focuses on:
- Evaluates whether there is:
The behavior of a treatment group (IV ON) is statistically different from that of the control group (IV OFF).
Statistical Significance Between Control and Test Group
Four Weaknesses of Group Designs
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4.
- The independent variable is a therapeutic intervention. No one wants the control group.
- Focus on the behavior of the group instead of individuals.
- The behavior of the treatment and control groups differs because people between groups are different.
- Reliance on inferential statistics evaluates whether IV changes behavior.
Behavior Analysis Two Goals
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2.
- Accurately predict behavior (our behavior and that of others)
- Useful in understanding behavior to influence actions contributing to the solution positively.
Single-Subject Experimental Design
- Expose an individual to baseline (IV OFF) and experimental (IV ON) phases to determine if IV reliably changes behavior.
Internal Validity
- Extent to which a result can be attributed to change in IV.
- Functional Relation Between IV and DV
Confounding Variables
- Variables that influence behavior but aren’t the independent variable.
Irreversible Behavior
Appropriate Designs:
Learned or changed behavior that doesn’t return to baseline after treatment is withdrawn.
Appropriate Design: Multiple Baseline Design and Comparison or A-B Designs
Comparison Design
-Problem:
-Does this rule out confounds?
A-B Design
Baseline and Experimental Phase (Must Become Stable Before Next Phase)
Need stability to predict.
No!
Baseline (A)
Experimental Phase (B)
Independent Variable OFF (Observe and record behavior without intervention)
Independent Variable ON (Introduce treatment and measure behavior)
Reversal Design
-Limitations
-Does this rule out confounds?
Baseline>Treatment>Baseline>Treatment
Limitations: Only possible with reversible behavior.
Yes
Alternating-Treatments Design
-Limitations
-Does this rule out confounds?
Compares multiple IV’s. Sessions are alternated to identify if IV or IV’s are related to the DV.
Limitations: Only possible with reversible behavior.
Yes
Multiple-Baseline Design
- Limitations:
- Evaluates Across:
- Evaluates effect of:
Only for irreversible behavior or when it is unethical to remove the intervention.
Limitations: Time-consuming, participant dropout.
Evaluate across: Behavior, situations, and people
Evaluates Effects of: IV on DV by staggering 3 or more A-B Comparisons.
Three Examples of Multiple-Baseline Designs
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Multiple-Baseline Across-Behaviors Designs (One subject multiple behaviors)
Multiple-Baseline Across-Situations Designs
Multiple-Baseline Across-Participants Designs
Defining Features of Single-Subject Design’s
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- Focus on individual behavior.
- Each subject experiences baseline and experimental phases.
- Behavior is measured repeatedly until predictions can be made.
- Internal validity is assessed through replication and assessing the functional roles of confounded variables.
Within-Individual Replication
Each of the four single-subject designs has a behavior of an individual repeatedly observed after the IV is turned ON.
Across-Individual Replication
When an intervention effect proves to be good within-individual replication, we want to see the benefit for others.
Replications Across Labs or Clinics
An IV produces within and across-individual behavior change, but researchers can’t replicate across experiments.
Visual Analysis
Involves looking at a graph of time-series single-subject behavior to evaluate if a change occurred when the IV was removed or introduced.
Trend
Level
Trend is a systematic change in behavior over time, in the direction and rate of change. Trend is the direction of data over time or the slope of the line.
Level is the prevalence of behavior during a stable portion of a phase. Level is the average value or magnitude of behavior on the vertical position of data.
Phylogenetic Behavior
Behavior we inherited from our ancestors/biological parents.
Reflexes Phylogenetic
Behaviors are inborn or automatic responses to specific stimuli that don’t require prior learning. Reflexes are present at birth which are evolutionary adaptations. These increase survival and reproductive success.
Elicited vs. Evoked Responses
Elicited: Stimulus or behavior is reflexive.
Evoked: Stimulus or behavior is not reflexive.
Habituation
Reflexes change with learning. Gradual reduction in reflexes following repeated exposure of the eliciting stimulus.
Learned During Pavlovian Conditioning
Pavlovian Conditioning Helps Us Predict an Unconditional Stimulus (Phylogenetically important event)