A brief message about what other students do was not enough to increase intentions to join collaborative learning. In a randomised online experiment involving 183 students at the University of Tehran, neither the type of norm message nor its attributed source produced a meaningful difference.
What researchers studied
The researchers tested whether students could be encouraged to participate in group learning by hearing that peer participation was common or growing. They also asked whether the message would be more persuasive when attributed to a socially closer rather than a more distant source.
Participants were randomly assigned to one of four conditions in a two-by-two design: dynamic versus static descriptions of peer behaviour, crossed with identity-proximal versus identity-distal sources.
Students reported their intention to engage in collaborative learning and how frequently they expected to participate. The researchers additionally measured attitudes, perceived behavioural control, student identity, perceptions of social norms and previous-semester participation.
What they found
Neither the assigned norm type nor the assigned source, nor their interaction, significantly changed the two intended-participation outcomes. Reported effect sizes were negligible.
A crucial manipulation check also failed: students who received dynamic and static messages did not meaningfully differ in their perception that peer participation had changed over time. This limits what can be inferred from the null experimental results.
Attitudes, perceived behavioural control, earlier participation and links between the behaviour and student identity were associated with anticipated participation frequency. An exploratory interaction reached a significance threshold, but follow-up tests did not identify a reliable conditional effect.
What it means
For educators, the research illustrates why a persuasive-looking message should not be assumed to alter behaviour. A message must first change the perception it is designed to target before downstream effects can reasonably be evaluated.
It may be more productive to examine practical barriers, students’ confidence and previous experience of group work. Those relationships were observational, however, and do not show that changing these factors would cause greater participation.
Important limitation
The norm manipulation did not work as intended, and perceived closeness to the stated source was not measured after exposure. The experiment assessed intentions rather than actual subsequent group-learning behaviour, so it cannot establish that social-norm messaging is generally ineffective.
Source Information
Study: Normative Messages and Students’ Intentions to Engage in Collaborative Learning: Evidence from an Experimental Study
Authors: Ali Afsharimehr, Abbas Ebrahimzadeh, Fatemeh Mohammadsadegh and Majid Asadpour
Journal / Source: Frontiers in Psychology
Published: 2 November 2026
