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SPCE 630 EXAM 1 MIDTERM Exam Questions and answers ()
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SPCE 630 Midterm Exam Questions and answers (202472025)Threats to internal validity include:
1. Generalization, testing, placebo effects
2. The number of participants
3. The number of replications
4. History, maturation, testing, procedural infidelity - ✔✔4. History, maturation, testing,
procedural infidelity
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Events that occur during the experiment but that are not related to planned procedural changes that
may influence the outcomes - ✔✔History
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Changes in behavior due to the passage of time - ✔✔Maturation
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Occurs when participants need to respond to the same test repeatedly during a baseline or probe
condition, which influences responding - ✔✔Testing
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Threats related to the measurement system, and are of concern because of repeated measurement
by human observers who may make errors - ✔✔Instrumentation
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,Inconsistent implementation of the experimental condition - ✔✔Procedural infidelity
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The loss of participants during a study, which limits the generality of findings - ✔✔Attrition
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Occurs when a participant's behavior is influenced by more than one planned intervention during
the course of a study - ✔✔Multiple treatment interference
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A type of data instability that refers to a repeated and predictable pattern in the data series over
time - ✔✔Cyclical variability
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The amount the variability in the data (dependent variable) over time - ✔✔Data instability
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When participants' observed behavior is not representative of their "true" or natural behavior as a
result of their knowledge of being participants in an experiment - ✔✔Hawthorn Effect
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, A period of time at the start of an investigation in which participants' recorded behavior may differ
from their natural behavior due to the novel conditions under which data is collected -
✔✔Adaptation
Carry over effects:
1. Is best described as the effect of a procedure used in one condition on responding in an adjacent
condition
2. Are more difficult to address than sequence effects
3. May influence the participants' responding based on the order in which the experimental
conditions are introduced to participants
4. Both A and B are correct - ✔✔4. Both A and B are correct
The hypothesis that assumes that sample observations are influenced by some non-random cause
is:
1. The null hypothesis
2. The alternative hypothesis
3. An example of a Type 1 error
4. An example of a Type 2 error - ✔✔2. The alternative hypothesis
Amanda is an RBT at an ABA clinic. They are working with a client, Jerrell, to decrease aggressive
behavior (biting others). They have collected data for the frequency of Jerrell's bites for 3 weeks.
Calculate the mean, median, and mode of the following data set (round to nearest whole number)
Week 1: 22, 31, 20, 32, 32
Week 2: 7, 8 , 13, 31, 17
Week 3: 16, 5, 9, 12, 15
1. Mean = 16, median = 16, mode = cannot be determined
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