The additive impact of group and individual publicly displayed feedback: examining individual response patterns and response generalization in a safe-driving occupational intervention.
Post individual scores next to team scores to revive and double safe-driving habits after group feedback stalls.
01Research in Context
What this study did
The team worked with adult drivers at two store locations. They first posted a big chart showing each store’s daily turn-signal use. After that rate flattened, they added a second chart that showed every single driver’s score.
The study used a multiple-baseline design across the two stores. No one got prizes or lectures—just the posted numbers.
What they found
Turn-signal use doubled after the individual names went up. The gain also spread to full stops at intersections.
The group chart alone helped a little, but adding personal scores pushed the trend higher.
How this fits with other research
Gabriels et al. (2001) got a smaller bump with a seat-belt sign and flyers on a college lot. Their 7 % gain shows public posting can work, but the new study shows you can squeeze out more by naming each person.
Sanders et al. (1989) saw the same pattern in shopping carts: a greeter’s personal reminder tripled belt use while signs alone faded. The 2010 driving data echo that rule—personal feedback packs extra punch.
Clayton et al. (2006) used roadside prompts and gained seat-belt use without any lists. Their signs worked, yet the 2010 paper proves you can go past a prompt’s ceiling when you keep score and show names.
Why it matters
If you run a safety program, start with a group board to build momentum. Once scores stall, add each worker’s name beside the team total. This two-step cost almost nothing and doubled safe acts in a real workplace. Try it Monday for any repeated safety skill—hand washing, lifting technique, or forklift checks.
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02At a glance
03Original abstract
Additive effects of publicly posting individual feedback following group goal-setting and feedback were evaluated. The turn-signal use of pizza deliverers was studied in a multiple baseline design across two pizza stores. After baseline observations, pizza deliverers voted on a group turn-signal goal and then received 4 weeks of group feedback on their turn-signal use (i.e., group feedback phase). Then, for the next 4 weeks, individual turn-signal use means were publicly posted along with the group feedback (i.e., individual feedback phase). Deliverers at Store A (n = 24) increased their use of turn signals from a mean of 5% during baseline to 16.9% during the group feedback phase and then to 30% during the individual feedback phase. Turn-signal use at Store B (n = 20) increased from 28.9% during baseline to 43.6% during group feedback phase and to 56% during the subsequent individual feedback phase. Individual analyses suggested that deliverers who improved the target behavior during group feedback phase did not increase their turn-signal use further when individual feedback was added. Conversely, most deliverers who did not improve during the group feedback phase increased their turn-signal use when individual feedback was added. Complete intersection stopping increased concurrently with the turn-signal intervention phases from baseline means of 12% and 30% at Store A and B, respectively, to means of 21% and 48% during the interventions.
Behavior modification, 2010 · doi:10.1177/0145445510383523