Effects of a non-eating confederate on food intake do not persist for everyone over time when people are left alone

An exploratory study

Marloes A. A. Polman*, Junilla K. Larsen, Gerine M. A. Lodder, Elizabeth Hirata, Sophie IJsseldijk, Nina van den Broek, William J. Burk

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

An extensive body of research has established that eating with others can have inhibitory effects on food intake. Recent findings suggest that these effects may (partly) persist over time when the eating norm is no longer enforced. To gain more insights into the persistence of effects of a live non-eating stranger, the main aim of the present study is to explore how food intake of young women changes as a result of previous exposure to a noneating confederate (i.e., adult stranger). To address this aim, an experiment was conducted in which 64 young women, aged 17 to 26 (M = 19.81, SD = 1.95), were given access to chocolates at two different time points. First, participants were all paired with a non-eating stranger (i.e.,confederate). Afterwards, half of the participants remained with the non-eating stranger (i.e., together-together condition), while the other half was left alone with the food (i.e., together-alone condition). Results indicated that participants who were left alone increased their intake on average, although raw data revealed interesting individual differences. In contrast, most of the participants who remained with the non-eating stranger did not increase intake. Participants in an ad hoc added control condition (i.e., no exposure to a non-eating confederate; alone-alone condition; n = 26) showed food intake similar to participants in the together-alone condition after they were left alone. Our findings suggest that if intake behaviors are too extreme and divergent from the desire to eat as much as possible, women may, on average, only adhere to these behaviors in the presence of others.

Original languageEnglish
Pages (from-to)104-108
JournalEating behaviors
Volume30
DOIs
Publication statusPublished - 2018

Keywords

  • Social influence
  • Non-eating confederate
  • Eating alone
  • Intake inhibition
  • SOCIAL-INFLUENCE
  • NORMS
  • BEHAVIOR

Cite this

Polman, Marloes A. A. ; Larsen, Junilla K. ; Lodder, Gerine M. A. ; Hirata, Elizabeth ; IJsseldijk, Sophie ; van den Broek, Nina ; Burk, William J. / Effects of a non-eating confederate on food intake do not persist for everyone over time when people are left alone : An exploratory study. In: Eating behaviors. 2018 ; Vol. 30. pp. 104-108.
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abstract = "An extensive body of research has established that eating with others can have inhibitory effects on food intake. Recent findings suggest that these effects may (partly) persist over time when the eating norm is no longer enforced. To gain more insights into the persistence of effects of a live non-eating stranger, the main aim of the present study is to explore how food intake of young women changes as a result of previous exposure to a noneating confederate (i.e., adult stranger). To address this aim, an experiment was conducted in which 64 young women, aged 17 to 26 (M = 19.81, SD = 1.95), were given access to chocolates at two different time points. First, participants were all paired with a non-eating stranger (i.e.,confederate). Afterwards, half of the participants remained with the non-eating stranger (i.e., together-together condition), while the other half was left alone with the food (i.e., together-alone condition). Results indicated that participants who were left alone increased their intake on average, although raw data revealed interesting individual differences. In contrast, most of the participants who remained with the non-eating stranger did not increase intake. Participants in an ad hoc added control condition (i.e., no exposure to a non-eating confederate; alone-alone condition; n = 26) showed food intake similar to participants in the together-alone condition after they were left alone. Our findings suggest that if intake behaviors are too extreme and divergent from the desire to eat as much as possible, women may, on average, only adhere to these behaviors in the presence of others.",
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language = "English",
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Effects of a non-eating confederate on food intake do not persist for everyone over time when people are left alone : An exploratory study. / Polman, Marloes A. A.; Larsen, Junilla K.; Lodder, Gerine M. A.; Hirata, Elizabeth; IJsseldijk, Sophie; van den Broek, Nina; Burk, William J.

In: Eating behaviors, Vol. 30, 2018, p. 104-108.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effects of a non-eating confederate on food intake do not persist for everyone over time when people are left alone

T2 - An exploratory study

AU - Polman, Marloes A. A.

AU - Larsen, Junilla K.

AU - Lodder, Gerine M. A.

AU - Hirata, Elizabeth

AU - IJsseldijk, Sophie

AU - van den Broek, Nina

AU - Burk, William J.

PY - 2018

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N2 - An extensive body of research has established that eating with others can have inhibitory effects on food intake. Recent findings suggest that these effects may (partly) persist over time when the eating norm is no longer enforced. To gain more insights into the persistence of effects of a live non-eating stranger, the main aim of the present study is to explore how food intake of young women changes as a result of previous exposure to a noneating confederate (i.e., adult stranger). To address this aim, an experiment was conducted in which 64 young women, aged 17 to 26 (M = 19.81, SD = 1.95), were given access to chocolates at two different time points. First, participants were all paired with a non-eating stranger (i.e.,confederate). Afterwards, half of the participants remained with the non-eating stranger (i.e., together-together condition), while the other half was left alone with the food (i.e., together-alone condition). Results indicated that participants who were left alone increased their intake on average, although raw data revealed interesting individual differences. In contrast, most of the participants who remained with the non-eating stranger did not increase intake. Participants in an ad hoc added control condition (i.e., no exposure to a non-eating confederate; alone-alone condition; n = 26) showed food intake similar to participants in the together-alone condition after they were left alone. Our findings suggest that if intake behaviors are too extreme and divergent from the desire to eat as much as possible, women may, on average, only adhere to these behaviors in the presence of others.

AB - An extensive body of research has established that eating with others can have inhibitory effects on food intake. Recent findings suggest that these effects may (partly) persist over time when the eating norm is no longer enforced. To gain more insights into the persistence of effects of a live non-eating stranger, the main aim of the present study is to explore how food intake of young women changes as a result of previous exposure to a noneating confederate (i.e., adult stranger). To address this aim, an experiment was conducted in which 64 young women, aged 17 to 26 (M = 19.81, SD = 1.95), were given access to chocolates at two different time points. First, participants were all paired with a non-eating stranger (i.e.,confederate). Afterwards, half of the participants remained with the non-eating stranger (i.e., together-together condition), while the other half was left alone with the food (i.e., together-alone condition). Results indicated that participants who were left alone increased their intake on average, although raw data revealed interesting individual differences. In contrast, most of the participants who remained with the non-eating stranger did not increase intake. Participants in an ad hoc added control condition (i.e., no exposure to a non-eating confederate; alone-alone condition; n = 26) showed food intake similar to participants in the together-alone condition after they were left alone. Our findings suggest that if intake behaviors are too extreme and divergent from the desire to eat as much as possible, women may, on average, only adhere to these behaviors in the presence of others.

KW - Social influence

KW - Non-eating confederate

KW - Eating alone

KW - Intake inhibition

KW - SOCIAL-INFLUENCE

KW - NORMS

KW - BEHAVIOR

U2 - 10.1016/j.eatbeh.2018.05.011

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ER -