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2017 ; 8
(ä): 1591
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Effects of Chocolate Deprivation on Implicit and Explicit Evaluation of Chocolate
in High and Low Trait Chocolate Cravers
#MMPMID28955287
Richard A
; Meule A
; Friese M
; Blechert J
Front Psychol
2017[]; 8
(ä): 1591
PMID28955287
show ga
Diet failures are often attributed to an increase in cravings for attractive
foods. However, accumulating evidence shows that food cravings actually decrease
during energy-restricting weight-loss interventions. The current study aimed at
elucidating possible mechanisms that may explain how and under which
circumstances food cravings in- or decrease during dieting. Specifically,
decreases in food cravings during weight-loss diets may be due to effects of
energy restriction (homeostatic changes) and to effects of avoiding specific
foods (hedonic changes). Thus, we used a selective, hedonic deprivation (i.e.,
restricting intake of a specific food in the absence of an energy deficit) that
precludes homeostatic changes due to energy restriction. Furthermore,
interindividual differences in food craving experiences might affect why some
individuals are more prone to experience cravings during dieting than others.
Thus, we investigated whether a selective deprivation of chocolate would in- or
decrease craving and implicit preference for chocolate as a function of
trait-level differences in chocolate craving. Participants with high and low
trait chocolate craving (HC, LC) refrained from consuming chocolate for 2 weeks
but otherwise maintained their usual food intake. Both groups underwent
laboratory assessments before and after deprivation, each including explicit
(i.e., state chocolate craving) and implicit measures (i.e., Single Category
Implicit Association Test, SC-IAT; Affect Misattribution Procedure, AMP). Results
showed that hedonic deprivation increased state chocolate craving in HCs only.
HCs also showed more positive implicit attitudes toward chocolate than LCs on the
SC-IAT and the AMP irrespective of deprivation. Results help to disambiguate
previous studies on the effects of dieting on food cravings. Specifically, while
previous studies showed that energy-restricting diets appear to decrease food
cravings, the current study showed that a selective, hedonic deprivation in the
absence of an energy deficit increases food cravings. However, this effect can
only be observed for individuals with high trait craving levels. Thus, if
attractive foods are strictly avoided through a selective deprivation, HCs are at
risk to experience craving bouts in the absence of an energy deficit. As implicit
preference was unaffected by chocolate deprivation, strong implicit preference
for chocolate likely characterize a stable mechanism that drives consumption in
HCs.