title: The Cognitive Social Network in Dreams: Transitivity, Assortativity, and Giant Component Proportion Are Monotonic.
abstract: For five individuals, a social network was constructed from a series of his or her dreams. Three important network measures were calculated for each network: transitivity, assortativity, and giant component proportion. These were monotonically related; over the five networks as transitivity increased, assortativity increased and giant component proportion decreased. The relations indicate that characters appear in dreams systematically. Systematicity likely arises from the dreamer's memory of people and their relations, which is from the dreamer's cognitive social network. But the dream social network is not a copy of the cognitive social network. Waking life social networks tend to have positive assortativity; that is, people tend to be connected to others with similar connectivity. Instead, in our sample of dream social networks assortativity is more often negative or near 0, as in online social networks. We show that if characters appear via a random walk, negative assortativity can result, particularly if the random walk is biased as suggested by remote associations.
authors.affiliation: Psychological Sciences, Purdue University.
authors.forename: Hye Joo
authors.initials: HJ
authors.lastname: Han
authors.affiliation: Psychological Sciences, Purdue University.
authors.forename: Richard
authors.initials: R
authors.lastname: Schweickert
authors.affiliation: Psychological Sciences, Purdue University.|Bank of America.
authors.forename: Zhuangzhuang
authors.initials: Z
authors.lastname: Xi
authors.affiliation: Psychological Sciences, Purdue University.|Department of Psychoeducation, University of Quebec at Trois Rivieres.
authors.forename: Charles
authors.initials: C
authors.lastname: Viau-Quesnel
mesh_terms: D003071:Cognition / Q000502:physiology*; D004325:Dreams / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory; D012944:Social Support
keywords: Assortativity; Dream; Giant component; Sleep; Social network; Transitivity