- Small sample size
- Participants were undergrad students, not actual workplace employees. Calls external validity into question
- Uncertain as to what mechanisms mediate the effect of space design on performance. Findings are inconclusive here
- Ad hoc teams: could the results of this study be stronger if teams with preexisting meaning were used? 

Wake Forest University

- Results Summary
- Limitations
- Implications

Discussion (Identity Signaling & Workplace Productivity)

Greenaway K.A., Thai A.H., Haslam S.A., Murphy S.C. (2016). Spaces that signal identity improve workplace productivity. Journal of Personnel Psychology, 15(1), 35–43. https://doi.org/10.1027/1866-5888/a000148

Spaces that Signal Identity Improve Workplace Productivity

- Ingroup-decorated spaces promoted productivity over the lean space, which can be partially attributed to increased team identification
- Workspaces decorated with the rival team's colors also improved productivity when compared with the lean space (but, researchers did NOT find a significant mediating effect with the outgroup condition)

Results Summary (Identity Signaling & Workplace Productivity)

Limitations (Identity Signaling & Workplace Productivity)

- Findings suggest that the physical work environment is a factor that should be considered when looking at performance
- Lean spaces could possibly be harmful in work/office environments
- People seem to perform better when the space represents the ingroup identity
- Outgroup identity spaces can also improve performance (but since the mediating effects here are not known, this is not as strong of a factor  as the ingroup space)

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