Generally people in interactive brainstorming groups Produce Fewer ideas and creative ones That are less than Those Sami Would people if They Were working Individually, in what is Known as nominal groups .  Production blocking, the tendency for one individual in a group discussion of block or other causes of offering ideas, is a major reason. 
For example, one person in a six-person group is talking about his or her idea, then the other five people are “blocked” and less able to provide their own creative input. Additionally, production can occur in the same way as other people are attempting to communicate their ideas at the same time. 
When others are talking, group members may not have time to think of an idea, might get distracted, or simply forget about their idea before they have an opportunity to share it. Production block is not the same as appraisal or social appraisal , two other factors that can cause people to produce fewer ideas in real, interactive groups than those in nominal groups. With evaluation apprehension, individuals may be reluctant to share their suggestions, fearing that they may be negatively criticized.  With social loafing, they may not share ideas because they believe they will do so instead. 
Methods to decrease the production blocking problem
- Writing down thoughts : Taking notes is recommended when group members are brainstorming groups waiting for their chance to speak. When communication is not available, it would be helpful to prevent productivity loss. Although the study has reduced the production of the problem, it has been shown that it does not increase the quantity of ideas produced. 
- Nominal Groups Nominal Groups Nominal Groups Nominal Groups surpass brainstorming groups.   Unlike traditional brainstorming groups, nominal groupsconsist of a body of students whose ideas can be shared. Individuals in nominal groups do not have to wait for their thoughts, so their ideas will not be forgotten or lost. Another factor to consider is that in brainstorming groups, individuals may end up having conversations about a different subject. This can be a significant factor that can lead to the production of the product group. Additionally, using nominal groups would have a larger number of ideas compared to traditional brainstorming groups.
- Brain storming online: Instead of physically interacting with other members of a brainstorming group, electric brainstorming consists of communication via a computer. Like nominal groups, members of electric brainstorming groups do not have to worry about waiting for their turn to speak. Ideas are also shared anonymously, therefore, group members do not feel like they share their unique thoughts.  Moreover, the ideas that group members would not be lost considering that they will be recorded.
- Increased Competition: When rewards are introduced  Group members are more self-focused and likely to share their thoughts.
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