3003PSY - Investigating the Associations Between Personality, Gender, and Body Mass with Repetitive Eating - COVID Kilos - Statistics Assignment Help

Assignment Task

Study Overview
You may have noticed that when you are spending a lot of time at home, or studying, that you may be eating more than you usually do, even when you aren’t hungry. You
may have even have heard the phrase “COVID Kilos” - a term that refers to the weight gain some people experienced after working and studying at home more over
the past year (see this interesting blog). Some researchers have termed this constant unplanned repetitive eating of small amounts of food and/or eating in the
absence of actual hunger as “repetitive eating” or “grazing” (Conceição et al., 2014).
This type of eating is commonly found in those undertaking bariatric surgery and those with binge-type eating disorders, but also frequently occurs in non-clinical
populations. Indeed, there appears to be a higher proportion in non-clinical samples than in eating-disorder samples (Conason, 2014). While it appears that grazing is a
somewhat a normative behaviour, grazing has been linked to weight increase, and lower quality of life (Heriseanu et al. 2019).
Psychological researchers note though, that some people graze far more than others. Recent research has found grazing to be more common in women, in those
with a higher body mass, and there have been some findings that suggest that certain personality traits like being more impulsive and being more sensitive to the
rewarding properties of food may be linked to greater grazing behaviour (Bonder et al., 2018; Wilson et al., 2021). Impulsiveness is typically defined as acting rashly and
without considering future consequences. Reward responsiveness can be conceptualized as having two separate facets: i) Reward Interest, which is defined as the tendency to notice and seek out rewarding situations or activities and ii) Reward Reactivity, which is defined as the tendency to respond positively to obtained rewards. While these factors (gender, body mass, impulsiveness, reward interest, and reward reactivity) have been associated with eating behaviour, previous studies have only looked the association with grazing independently of each other (e.g., have only looked at the association between being overweight, or impulsive, etc) but not in a single study. This is important as often impulsiveness and reward responsiveness are also correlated with each other (e.g., Dawe et al., 2004). By examining these personality traits, together with gender and body mass, in their association with grazing in a single study we can test the unique associations between each factor and the outcome variable, in addition to the overall association between the predictor variables and grazing.

The current study
To that end a researcher ran a study collecting data from a sample of adults in the community by asking them to complete an online survey. The survey consisted of
asking participants their height and weight, their identified gender, and three survey questionnaires measuring 1) grazing (repetitive eating), 2) impulsiveness, and 3) the
two facets of reward responsiveness: reward interest, and reward reactivity. Grazing behaviour was measured using the Repetitive Eating Questionnaire (Conceição, et
al., 2014). Impulsiveness was measured using the Barratt Impulsiveness Scale - Brief; Sternberg, Sharp, Stanford, & Tharp, 2013) while reward interest and reward
reactivity were measured using items from the Short Version of the Reinforcement Sensitivity Theory Personality Questionnaire (Vecchione & Corr, 2020).

In this assignment you will be tasked with testing the following research question: What are the associations between gender, body mass index (BMI), impulsiveness, reward interest, and reward reactivity on self-reported grazing?
 

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