DClinPsy Portfolio Volume 1 of 3 - University of Hertfordshire ...

Hypotheses III
Inflexibility was positively associated with both depression rs = 0.46, p = 0.00 and
anxiety, rs = 0.55, p = 0.00 with medium effect sizes. Body image acceptance was
negatively associated with depression rs = 0.44, p = 0.00, and negatively associated with
anxiety, rs =-0.50, p = 0.00 again with medium effect sizes. Moreover, there was a
significant difference between the low and high EDR groups as regards anxiety (z = -
2.67, p = 0.00) and depression (z = -1.60, p = 0.05) with large (0.9) and moderate (0.49)
effect sizes for anxiety and depression respectively.
Additional research questions - Background information in relation to EDR
The additional research questions considered the contributing factors that were collected
as part of the background information and were explored in relation to the key variable of
inflexibility and then compared across the EDR groups. Lastly, a prediction model was
devised using logistic regression analysis.
A significant mean difference between inflexibility and eating disorder family history
was found, z = -1.86, p = 0.03, Cohen’s d = 0.57, thus a medium effect size. There was
no significant difference found between mental illness family history and inflexibility and
between drug and alcohol use and academic performance in relation to inflexibility. Thus
those with an eating disorder history in their family had higher levels of inflexibility.
Eating disorder family history was compared across the EDR groups and a borderline
significance was found χ² = 4.37, df = 2, p = 0.11, Contingency Coefficient = 0.21. No
significant difference was found across the groups regarding mental illness history. It was
also found that the moderate and high EDR groups had a higher mean difference of drug
and alcohol use with alcohol use being highly significant χ² = 14.75, df = 2, p = 0.00,
Contingency Coefficient = 0.38.
Bullying was considered across the EDR groups predicting a higher EDR but no
significant mean difference was found between the groups.
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