Health Behavior Clinical Trial
Official title:
Effects of Congruent and In-congruent Experiential Learning on Intake of a Novel Vegetable in Preschool Children
The aim of this cluster randomized control trial is to test the efficacy of providing experience of a target novel vegetable within the context of an interactive story time to increase intake of the target novel vegetable in preschool aged children (aged 2-5 years).
The aim of this study is to test the efficacy of providing experience of a target novel
vegetable within the context of an interactive story time to increase intake of the target
novel vegetable in preschool aged children (aged 2-5 years). In particular, the study will
assess whether these strategies are effective to encourage intake of an unfamiliar vegetable
in children who are fussy eaters.
There are two manipulations in this study - the provision of a story which features either a
target vegetable (celeriac) or a control vegetable (carrot) and the presence of experiential
learning (smelling, touching, looking at the vegetable) with either the target vegetable or
the control vegetable.
Baseline consumption and familiarity of the target veg will be assessed for all children,
before the intervention. The intervention consists of two familiarization trials, and 2-weeks
of access to a story book featuring vegetables. Following the final familiarization trial,
consumption and familiarity will be assessed again. Each familiarization trial consists of a
story in class, and depending on condition, an experiential learning episode in class. During
the 2 week interval between familiarization sessions nurseries will be requested to ready the
story book 5 times in the preschool room (at times convenient to them).
Participants will be cluster randomized into 4 groups (2X2 between subjects design): 1)
target vegetable narrative, 2) target vegetable narrative + experiential, 3) control
vegetable narrative 4) control vegetable narrative + experiential
Child's food fussiness data will be collected by parents using the Food Fussiness sub scale
of the Child Eating Behaviour Questionnaire. Their usual consumption of the target vegetable
will also be measured using parent report.
Nursery staff will be requested to provide feedback to evaluate intervention feasibility,
barriers and efficacy.
It is predicted that children's intake of the novel vegetable will vary by intervention. The
primary hypothesis to be tested is that providing experience of a target novel vegetable
within the context of an interactive story time will encourage preschoolers to taste, try and
eat the target vegetable.
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