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Beware Of Popular Kids Bearing Gifts: A Framed Field Experiment - Jignan Chen, Daniel Houser, Natalia Montinari, And Marco Piovesan (Interdisciplinary Center For Economic Science, George Mason University) Page 20

Table 5. Probit Regression Results

Sharing

Variables

Coefficients

Marginal Effects

(1)

(2)

(3)

(4)

(1)

(2)

(3)

(4)

-.29*

-4.97***

-3.22**

-3.96

Const.

(.16)

(1.27)

(1.34)

(2.87)

.33

.13

-6.38***

-10.85***

.13

.05

-.99***

Public

(.40)

(.29)

(1.76)

(3.33)

(.16)

(.11)

(.02)

(.00)

-.001

-.02

-.09

-.0005

-.006

-.03

Popularity

(.02)

(.19)

(.007)

(.01)

(.07)

.06*

-.41

.02

-.16

Public×Popularity

(.03)

(.25)

(.01)

(.10)

.45***

.30***

.38

.17***

.11***

.14

Age

(.10)

(.08)

(.25)

(.04)

(.03)

(.10)

.56***

1.02***

.21***

.39***

Public×Age

(.18)

(.34)

(.07)

(.14)

.008

.003

Popularity×Age

(.02)

(.008)

Public×Popularity

.05

.02

× Age

(.03)

(.01)

-.23

-.35

-.34

-.08

-.13

Male

(.21)

(.24)

(.25)

(.08)

(.09)

(.10)

.34

.45

.13

.18

Public×Male

(.41)

(.43)

(.16)

(.17)

.10

.03

.04

.01

.02

Prosocial

(.06)

(.07)

(.08)

(.03)

.22**

.21*

.08**

.08*

Public×Prosocial

(.11)

(.04)

231

182

Pseudo R2

0.01

0.19

0.24

0.25

Standard errors are in the parenthesis. Errors are clustered at group level. ***,**,* indicate significant level

at p=.01,.05, .10, respectively .

In regression (3), we focus on the interaction effects of population and age in Public and

Private: popularity has a significant and positive effect on the sharing probability only in

Public (p = .04). However, this effect is not seen in Private (p= .57), which suggests that

more popular kids are more likely to share in Public. Nonetheless, in actuality, they are

no more generous than in Private. On the other hand, less popular kids behave more

similarly between Public and Private. Indeed, children ranked first are 20% more likely to

share than children ranked eleventh in Public, although a first ranked child is no more

likely to share than a child ranked eleventh when sharing occurs in Private. Additionally,

age has a significant and positive impact on both Public and Private treatments (p < .01

and p < .01, respectively). Pro-social tendencies play a significant and positive role in

18!

Beware Of Popular Kids Bearing Gifts: A Framed Field Experiment - Jignan Chen, Daniel Houser, Natalia Montinari, And Marco Piovesan (Interdisciplinary Center For Economic Science, George Mason University) Page 20

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