In recent decades, many researchers have studied the importance of group-level cognition. Indeed, to my mind, there is now convincing evidence that group activities improve the intelligence of individuals. In this essay, I shall examine how research in team-games and study-groups supports this view.
To begin with, team-games clearly require individuals to perform a diverse range of rapid mental calculations. This is because, in a sporting context, players must predict and anticipate possible actions within tight time constraints. For example, a recent Cambridge study showed that soccer players can – within the span of seconds – calculate over a dozen different permutations that could result from a single soccer related action. Such predictive powers clearly improve players’ mental abilities and result from activities performed in a group context.
Secondly, study-groups enable individuals to obtain information that they could not acquire in isolation. This is because peer feedback allows individuals to refine their understanding of concepts and to also learn new information from other members in the study-group. For example, a study by The British Institute for Learning found that, if individuals participated in study-groups, they had a far more objective and sophisticated understanding of a topic than learners who were not part of study-groups. Therefore, it is certainly the case that learning in a group improves an individual’s mental abilities.
In conclusion, I strongly agree with the notion that group activities improve intellectual abilities. In the future, we will certainly see schools take greater measures to ensure that more group-level cognition occurs in the classroom. 
In recent decades,  
many
 researchers have studied the importance of group-level cognition.  
Indeed
, to my mind, there is  
now
 convincing evidence that  
group
 activities  
improve
 the intelligence of  
individuals
. In this essay, I shall examine how research in team-games and study-groups supports this view.
To  
begin
 with, team-games  
clearly
 require  
individuals
 to perform a diverse range of rapid mental calculations. This is  
because
, in a sporting context, players  
must
 predict and anticipate possible actions within tight time constraints.  
For example
, a recent Cambridge study  
showed
 that soccer players can  
–
 within the span of seconds  
–
 calculate over a dozen  
different
 permutations that could result from a single soccer related action. Such predictive powers  
clearly
  improve
 players’ mental abilities and result from activities performed in a  
group
 context. 
Secondly
, study-groups enable  
individuals
 to obtain information that they could not acquire in isolation. This is  
because
 peer feedback  
allows
  individuals
 to refine their understanding of concepts and to  
also
 learn new information from other members in the study-group.  
For example
, a study by The British Institute for Learning  
found
 that, if  
individuals
 participated in study-groups, they had a far more objective and sophisticated understanding of a topic than learners who were not part of study-groups.  
Therefore
, it is  
certainly
 the case that learning in a  
group
  improves
 an  
individual’s
 mental abilities. 
In conclusion
, I  
strongly
  agree
 with the notion that  
group
 activities  
improve
 intellectual abilities. In the future, we will  
certainly
  see
 schools take greater measures to ensure that more group-level cognition occurs in the classroom.