PSYC13015 Major Data Analysis Assessment
Due 11.45pm Monday 6th September 2021, week 8 (Live,
16/08/2020)
Q1. (15 MARKS). To answer the below question, you will need to enter the dataset
provided below. You will run an analysis on this dataset in SPSS using parametric
tests.
An occupational psychologist is hired to monitor Lecturer engagement and burnout
during the restructure of a Canadian University. The psychologist administers the
Maslach Burnout Inventory (MBI) over three time points to the same 30 staff
members: 3 months before the restructure started, in the middle of the 3 month
estructure, and 3 months after the restructure. None of the staff were made
edundant or took voluntary redundancy during the 9 months, but may have
experienced stress and anxiety. The scores on the Personal Achievement sub-scale
were reverse scored and an overall score was calculated by adding those scores to
scores on the other two sub-scales, i.e., Burnout and Depersonalization. Higher total
scores on the MBI indicate more susceptibility to burnout, which can result in
greater staff absenteeism, low morale, and increased substance abuse. Note: this is
hypothetical data and is not based on any one published journal article.
The data are below.
a) Report the findings including normality assumption testing as per guidelines
given for assessment 1, minor data analysis, e.g., exact p values when
eporting all levels of Shapiro-Wilk. Report in full any assumptions required
for the main ANOVA. Report the main ANOVA as per APA guidelines and give
an indication of whether the effect size is small (.01), medium (.06), or large
(.14) using partial eta squared. Good write ups will clearly indicate the
direction of differences. (11 MARKS)
) Name the non-parametric statistical main test and follow-up (post-hoc) tests
that could be used as an alternative if the parametric assumptions were
severely violated. (2 MARKS)
c) Paste the syntax for the main ANOVA (and bonfe
oni post-hoc tests) used in
a) under your write-up. (2 MARKS)
Extra notes and hints
• You do not need to understand all the ins and outs of the MBI, nor the extant
literature, but some
ief reading is encouraged. You can just use the scores
elow, noting that higher scores indicate more likelihood of burnout. The
scores should be plausible.
• There is no need to identify nor remove potential outliers.
After restructure
(+ 3months)
During restructure
Before restructure
(- 3 months)
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Q2. (20 MARKS). To answer the below question, you will need to enter the dataset
provided below. You will run an analysis on this dataset in SPSS using parametric
tests.
Background: People often make use of memory aids to help remember things in
daily life. A psychologist was interested in whether technology can improve
prospective memory and whether this interacts with age. Twenty-seven young
adults XXXXXXXXXXyears, M = 24.62, SD = 2.43) and 27 middle-aged adults XXXXXXXXXXyears, M
= 55.03, SD = 2.49) took part in a study that tested their prospective memory over a
5 week period. Participants were allocated to one of the three memory-aid
conditions None (control), Paper based diary (day to a view style) and Smartphone
(choice of using an iOS or Android bespoke app). They were all in paid employment
with a median salary of $62,000 per annum for the younger adults and $78,000 per
annum for the middle-aged adults. Before the trial started everyone met with a
Research Assistant (for approximately 2 hours) and were given some basic health
and cognitive screening tests. They were then given training (for approximately 1
hour) on using the paper diary or smartphone depending on which condition they
were assigned. along with the experience sampling app. Once the trial started the
number of self-reported prospective memory failures per week were recorded (on a
mobile phone for all conditions) and this was totalled over 5 weeks. The first week of
data was not used as this gave people chance to become familiar with their memory
aid and the experience sampling method and app. Note: this is hypothetical data and is not
ased on any one published journal article.
The total number of prospective memory failures (per person) summed over 4
weeks are provided in the dataset below. You will need to enter this into the SPSS
data editor.
None Paper diary Smartphone
Young Middle Young Middle Young Middle
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Total
Group Mean
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a) Report the findings (including
ief assumption testing) from your analysis
in APA style. This should include post-hoc tests and running simple effects
analysis (using the syntax method). (17 MARKS).
) Paste the syntax for the main test, post-hoc tests and simple effects used
under your write-up (3 MARKS)
Extra notes and hints
1. For a) you should consider the normality for 6 conditions separately (hint: use
split file command). Unlike Q1 here and the minor data analysis assessment
you do not have to report the exact p values for Shapiro Wilk, but the reader
should know which of the conditions are or are not violated. For the
homogeneity of variance assumption, you should report it once (in full with
DFs) for the whole ANOVA.
2. You should report the 2 main effects and interaction terms in full, regardless
of whether significant or not. You should report partial eta squared effect
sizes (for main ANOVA terms only, not post-hoc tests nor simple effects
analyses) and indicate whether small (.01), medium (.09), or large XXXXXXXXXXNote.
This heuristic is more conservative than the one requested for one-way
ANOVAs. If applicable you should also report post-hoc tests with exact p
values. For this assessment we would like you to use the Tukey test.
3. For this assessment you should only run and report one set of simple main
effects analyses and this should be clear from your syntax. For this
assessment, we’d like that to be the simple effects of the Age IV within each
level combination of the Memory aid IV. The reader should be able to discern
which of these 3 simple effects is or is not significant. It is possible that
unning them the ‘other’ way may have led to a different interpretation or
helped interpretation. But please run, interpret, and report the way
equested.
4. You do not need to report effect sizes for the simple effects, just for the main
ANOVA terms as per point 2 above. However, wherever possible you should
eport actual p values for each simple effect.
5. You do not need to include graphs nor tables, but you may find getting SPSS
to generate plots may help you to interpret the interaction.
6. There is no need to identify nor remove potential outliers.
Q3 (5 MARKS)
The Australian government are interested in the uptake of electric bikes in three
egional cities. They have survey data collated and supplied by local Bicycle User’s
groups (BUGs). The responses are binary, with people falling into either do or do not.
The following figures are a) total number of respondents per town and b) % saying
they do not regularly use an electric bike
Cairns XXXXXXXXXX%); Newcastle XXXXXXXXXX%); Bunbury XXXXXXXXXX%)
a) What main statistical test and additional tests could we use to explore if
there is an association between location and whether people use an electric
ike regularly?) (3 MARKS)
) Assume we got a decent mix of ages (in all the towns) from our survey, and
we were able to categorize people into younger XXXXXXXXXXand older (46-70)
espondents. What main statistical test could we use to look at whether the
possible association in a) is also influenced by age? (2 MARKS)
Total marks 40
Word count max 1300. Read the additional guidelines document.