1
SPCE 630 Exam 1 Questions with Correct
Answers | Updated (100% Correct Answers)
History, maturation, testing, procedural infidelity Answer: Threats to
internal validity include:
History Answer: Events that occur during the experiment but that
are not related to planned procedural
changes that may influence the outcomes.
Maturation Answer: Changes in behavior due to the passage of
time.
Testing Answer: Occurs when participants need to respond to the
same test repeatedly during a baseline or probe
condition, which influences responding.
Instrumentation Answer: Threats related to the measurement
system, and are of concern because of repeated
measurement by human observers who may make errors.
Procedural Infidelity Answer: Inconsistent implementation of the
experimental condition.
© 2025 All rights reserved
,2
Attrition Answer: The loss of participants during a study, which
limits the generality of findings.
Multiple Treatment Interference Answer: Occurs when a
participant's behavior is influenced by more than one planned
intervention during the course of a study.
Cyclical Variability Answer: A type of data instability that refers to a
repeated and predictable pattern in the data series over time.
A. May influence the participants' responding based on the order in
which the experimental
conditions are introduced to participants.
B. Can be controlled by counterbalancing.
C. Is best described as the effect of a procedure used in one
condition on responding in an
adjacent condition.
****Both A and B are correct. Answer: Sequential confounding:
The alternative hypothesis Answer: The hypothesis that assumes
that sample observations are influenced by some non-random cause
is
Mean = 18, Median =16,
© 2025 All rights reserved
, 3
Mode = 31, 32 Answer: Amanda is an RBT at an ABA clinic. She is
working with her client, Jerrell, to decrease
aggressive behaviors (i.e., biting others). She has collected data for
the frequency of Jerrell's
bites for three weeks. Calculate the mean, median, and mode of the
following data set (round to
the nearest whole number):
Week 1: 22, 31, 20, 32, 32
Week 2: 7, 8, 13, 31, 17
Week 3: 16, 5, 9, 12, 15
A Type I Error Answer: Dr. Jones wanted to know if the use of the
Good Behavior Game decreased rates of disruptive
behaviors in an elementary school. Dr. Jones collected data
throughout the duration of the school
year across two elementary schools. In school A, all k-6 classrooms
used the Good Behavior
Game. In School B, no classrooms used the Good Behavior Game. At
the end of the school year,
© 2025 All rights reserved
SPCE 630 Exam 1 Questions with Correct
Answers | Updated (100% Correct Answers)
History, maturation, testing, procedural infidelity Answer: Threats to
internal validity include:
History Answer: Events that occur during the experiment but that
are not related to planned procedural
changes that may influence the outcomes.
Maturation Answer: Changes in behavior due to the passage of
time.
Testing Answer: Occurs when participants need to respond to the
same test repeatedly during a baseline or probe
condition, which influences responding.
Instrumentation Answer: Threats related to the measurement
system, and are of concern because of repeated
measurement by human observers who may make errors.
Procedural Infidelity Answer: Inconsistent implementation of the
experimental condition.
© 2025 All rights reserved
,2
Attrition Answer: The loss of participants during a study, which
limits the generality of findings.
Multiple Treatment Interference Answer: Occurs when a
participant's behavior is influenced by more than one planned
intervention during the course of a study.
Cyclical Variability Answer: A type of data instability that refers to a
repeated and predictable pattern in the data series over time.
A. May influence the participants' responding based on the order in
which the experimental
conditions are introduced to participants.
B. Can be controlled by counterbalancing.
C. Is best described as the effect of a procedure used in one
condition on responding in an
adjacent condition.
****Both A and B are correct. Answer: Sequential confounding:
The alternative hypothesis Answer: The hypothesis that assumes
that sample observations are influenced by some non-random cause
is
Mean = 18, Median =16,
© 2025 All rights reserved
, 3
Mode = 31, 32 Answer: Amanda is an RBT at an ABA clinic. She is
working with her client, Jerrell, to decrease
aggressive behaviors (i.e., biting others). She has collected data for
the frequency of Jerrell's
bites for three weeks. Calculate the mean, median, and mode of the
following data set (round to
the nearest whole number):
Week 1: 22, 31, 20, 32, 32
Week 2: 7, 8, 13, 31, 17
Week 3: 16, 5, 9, 12, 15
A Type I Error Answer: Dr. Jones wanted to know if the use of the
Good Behavior Game decreased rates of disruptive
behaviors in an elementary school. Dr. Jones collected data
throughout the duration of the school
year across two elementary schools. In school A, all k-6 classrooms
used the Good Behavior
Game. In School B, no classrooms used the Good Behavior Game. At
the end of the school year,
© 2025 All rights reserved
