Table 2. The percentage of children who chose each picture for each group characteristics question.

	Intimacy group (Friends)	Task group (People building a house)	Social category (People who look alike)	Loose association (People at the tram stop)	n
Obligations and prosocial behaviors
Helping	20.8%	68.8%	6.3%	4.2%	48
Sharing	64.6%	14.6%	14.6%	6.3%	48
Loyalty	43.5%	26.1%	23.9%	6.5%	46
Nature of relationships
Liking	43.8%	27.1%	16.7%	12.5%	48
Familiarity	36.2%	17.0%	42.6%	4.3%	47
Interdependence	20.8%	54.2%	18.7%	6.3%	48
Joint goals	31.4%	35.4%	27.1%	6.3%	48
Similarities between group members
Similarity	4.3%	10.6%	59.6%	25.5%	47
Shared preferences	11.1%	33.3%	51.1%	4.4%	45
Common knowledge	22.7%	9.1%	56.8%	11.4%	44
Characteristics of the group as a whole
No continuance	12.8%	6.4%	17.0%	63.8%	47
Low permeability	10.9%	26.1%	15.2%	47.8%	46

Since all children who made a choice (indicated by the n) chose just one picture for each question, rows add up to 100%. Choices that were made significantly above chance (25%) are in bold (binomial tests, all p’s < 0.01).