"What are food and air like inside our bodies?"

Children's thinking about digestion and respiration

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A series of five experiments evaluated whether young children are aware of biological transformations associated with eating and breathing. In Experiment 1, children aged 4, 5, 7, and 8 years predicted that biological damage results from lack of eating and breathing. Children also recognised that food changes inside the body, but seldom referred spontaneously to biological transformation. In Experiments 2 and 2A, children were presented with several alternative explanations of what food and air would be like inside the human body. Both preschoolers and elementary schoolchildren assumed that air would acquire warmth and colour inside the body. The older children consistently understood biological transformation of food. Preschoolers accepted the idea that food undergoes a transformation necessary for health and growth, but did not think so when the transformation was expressed in a material sense. In Experiments 3 and 3A, some preschoolers predicted the transformation of resources inside familiar and unfamiliar living things, but not inside nonliving things. In addition, some 4- and 5-year-olds recognised the sun's contribution to "digestive" processes for plants, but not for mammals. Finally, the question of whether early understanding of digestion can be termed "theory-like" was discussed.

Original languageEnglish
Pages (from-to)222-230
Number of pages9
JournalInternational Journal of Behavioral Development
Volume24
Issue number2
Publication statusPublished - 2000
Externally publishedYes

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Digestion
Respiration
Air
air
food
Food
experiment
eating behavior
Eating
Solar System
Human Body
Mammals
schoolchild
Color
damages
Health
Growth
lack
health
resources

ASJC Scopus subject areas

  • Psychology(all)
  • Developmental and Educational Psychology

Cite this

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abstract = "A series of five experiments evaluated whether young children are aware of biological transformations associated with eating and breathing. In Experiment 1, children aged 4, 5, 7, and 8 years predicted that biological damage results from lack of eating and breathing. Children also recognised that food changes inside the body, but seldom referred spontaneously to biological transformation. In Experiments 2 and 2A, children were presented with several alternative explanations of what food and air would be like inside the human body. Both preschoolers and elementary schoolchildren assumed that air would acquire warmth and colour inside the body. The older children consistently understood biological transformation of food. Preschoolers accepted the idea that food undergoes a transformation necessary for health and growth, but did not think so when the transformation was expressed in a material sense. In Experiments 3 and 3A, some preschoolers predicted the transformation of resources inside familiar and unfamiliar living things, but not inside nonliving things. In addition, some 4- and 5-year-olds recognised the sun's contribution to {"}digestive{"} processes for plants, but not for mammals. Finally, the question of whether early understanding of digestion can be termed {"}theory-like{"} was discussed.",
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