Table 2. Dyads by Treatment Status.

Sample Means	Treatment: Same Room	Control: Different Room	Difference
One postdoc	0.404	0.396	-0.007
Both postdocs	0.072	0.075	0.003
One female	0.403	0.418	0.015*
Both female	0.085	0.082	-0.004
Same hospital	0.198	0.208	0.010+
Both Longwood	0.266	0.258	-0.010+
One imager + one clinician	0.492	0.489	-0.003
Both imagers	0.175	0.176	0.001
Same clinical area (SOI)	0.123	0.119	-0.004
Previous coauthor	0.001	0.002	0.001*
Observations	6,702	19,962

Notes: The unit of observation is a dyad of researchers. We construct dyads by creating every possible pairwise combination of researchers attending on the same night (26,604 dyads).The category Treatment: Same Room refers to participants in the same room at the event; it was randomized across pairs of participants attending on the same night. Collaboration indicates whether the pair appeared on any common pilot grant or concept award applications. See Section III in the text for a detailed description of the variables. Stars indicate the results of -tests for equality of means.

⁺p < 0.10,

^*p < 0.05,

^**p < 0.01.