Participants

Final N = 429

Conditions

Chat: Discuss questions w partner (2 min per question):
In this first section, you are going to be matched up in a chatroom with another participant who is taking this survey concurrently. You will work together to answer several questions about different pictures. Your goal will be to figure out what you think is really going on in the pictures together.

On the next page, you will be re-directed to a chat window. Once you’re matched with a partner, you will be presented with 6 prompt questions to discuss for 2 minutes each – please chat continuously until you have discussed all the questions. Thank you

Control: Write answers to questions (1 min per question):

In this first section, you are going to answer several questions about different pictures. Your goal will be to figure out what you think is really going on in the pictures.

You will be presented with 6 prompt questions to write about for 1 minute each. Please continue writing until you are directed to the next question. Thank you!

Certainty (Collapsing across conditions)

3-items; e.g., I am certain of what I think is really going on in the pictures. [ 1 - strongly disagree, 7- strongly agree]

  epis.cert
Predictors Estimates CI p
(Intercept) 3.69 3.52 – 3.85 <0.001
allo [1] 0.68 0.37 – 0.99 <0.001
Observations 429
R2 / R2 adjusted 0.042 / 0.039


No interaction with condition:
  epis.cert
Predictors Estimates CI p
(Intercept) 3.55 3.33 – 3.76 <0.001
allo [1] 0.74 0.35 – 1.12 <0.001
condition [1] 0.38 0.03 – 0.73 0.034
allo [1] * condition [1] -0.12 -0.77 – 0.54 0.722
Observations 429
R2 / R2 adjusted 0.053 / 0.047


Objectivity (Collapsing across conditions)

How sure are you that the way you interpreted the pictures is objectively right (reflects what is actually going on in the pictures)? [1 - Not at all sure; 7 - Extremely sure ]

  obj
Predictors Estimates CI p
(Intercept) 3.17 2.98 – 3.35 <0.001
allo [1] 0.85 0.51 – 1.19 <0.001
Observations 429
R2 / R2 adjusted 0.053 / 0.051


No interaction with condition:
  obj
Predictors Estimates CI p
(Intercept) 2.94 2.71 – 3.17 <0.001
allo [1] 0.95 0.54 – 1.36 <0.001
condition [1] 0.61 0.23 – 0.99 0.002
allo [1] * condition [1] -0.24 -0.95 – 0.46 0.501
Observations 429
R2 / R2 adjusted 0.079 / 0.072


Within Chat Condition

SR-G

8-items; During our chat …we shared the same thoughts and feelings about things// …saw the world in the same way [1 - strongly disagree’ 7 - strongly agree]

  srg
Predictors Estimates CI p
(Intercept) 4.33 4.03 – 4.63 <0.001
allo [1] 0.21 -0.36 – 0.78 0.464
Observations 154
R2 / R2 adjusted 0.004 / -0.003


SR-T

2-items; My partner and I see the pictures in the same way [1 - strongly disagree’ 7 - strongly agree]

  srt
Predictors Estimates CI p
(Intercept) 4.55 4.22 – 4.88 <0.001
allo [1] 0.11 -0.52 – 0.73 0.740
Observations 154
R2 / R2 adjusted 0.001 / -0.006


Pic Influence

How much do you feel that you changed your opinion of the pictures throughout your discussion, compared to your partner?
o 1 - My partner changed their opinion more (1) o 4 - We changed our opinions equally (4) o 7 - I changed my opinion more (7)

  pic.infl
Predictors Estimates CI p
(Intercept) 4.23 3.98 – 4.49 <0.001
allo [1] 0.04 -0.44 – 0.52 0.869
Observations 119
R2 / R2 adjusted 0.000 / -0.008