Informative Social Interactions

Working Paper: CEPR ID: DP14840

Authors: Luc Arrondel; Hector Calvo Pardo; Chryssi Giannitsarou; Michael Haliassos

Abstract: Household finances are confidential and discussions are limited to a subset of peers. We collect novel representative survey data to examine separately whether interac- tions with inner and outer social circles influence return perceptions, expectations, and exposure to a widely known financial instrument in a developed economy with multiple information sources. We find that a respondent’s connectedness, proxied by perceived prevalence of information or participation in the small financial circle, improves expectation accuracy indirectly, through boosting accuracy of perceived past returns; and influences stock participation and exposure not only by influencing expectations, but also directly.

Keywords: Information Networks; Social Interactions; Subjective Expectations; Peer Effects; Household Portfolio Choice

JEL Codes: G5; G11; D12; D83; D84


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Connectedness to inner financial circle (F65)Accuracy of return expectations (G17)
Accuracy of return expectations (G17)Stock market participation (G19)
Connectedness to informed peers (C92)Stock market participation (G19)
Connectedness to informed peers (C92)Risky portfolio share (G11)
Mindless imitation from outer social circle (C92)Expectations and behaviors (D84)

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