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SPCE 630 Midterm Exam 2024/2025 Questions With Already Graded A Solutions.
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SPCE 630 Midterm Exam 2024/2025 Questions With Already Graded A Solutions.
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SPCE630
Midterm
Threats
to
internal
validity
include:
-
ANS
History,
maturation,
testing,
procedural
infidelity,
testing,
instrumentation,
selection
bias,
multiple
treatment
interference,
data
instability,
cyclical
variability,
regression
to
the
mean,
adaptation,
Hawthorne
effect
History:
-
ANS
Events
that
occur
during
the
experiment
but
that
are
not
related
to
the
planned
procedural
changes
that
may
influence
the
outcomes
Maturation
-
ANS
Changes
in
behavior
due
to
the
passage
of
time.
Testing
-
ANS
Occurs
when
participants
need
to
respond
to
the
same
test
repeatedly
during
a
baseline
or
probe
condition,
which
influences
responding.
Instrumentation
-
ANS
Threats
related
to
the
measurement
system,
and
are
of
concern
because
of
repeated
measurement
by
human
observers
who
may
make
errors.
Procedural
Infidelity
-
ANS
Inconsistent
implementation
of
the
experimental
condition.
Attrition
-
ANS
The
loss
of
participants
during
a
study,
which
limits
the
generality
of
findings.
Multiple
Treatment
Interference
-
ANS
Occurs
when
a
participant's
behavior
is
influenced
by
more
than
one
planned
intervention
during
the
course
of
a
study
Cyclical
Variability
-
ANS
A
type
of
data
instability
that
refers
to
a
repeated
and
predictable
pattern
in
the
data
series
over
time.
Sequential
confounding:
-
ANS
-May
influence
the
participants'
responding
based
on
the
order
in
which
the
experimental
conditions
are
introduced
to
participants.
-Can
be
controlled
by
counterbalancing.
The
hypothesis
that
states
that
there
is
no
significant
difference
between
samples
is:
-
ANS
The
null
hypothesis
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
up
to
the
nearest
whole
number):
Week
1:
12,
11,
10,
22,
22
Week
2:
7,
8,
13,
21,
17
Week
3:
16,
7,
9,
3,
0
-
ANS
Mean
=12,
Median
=
11,
Mode
=
7,
22
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