Collective efficacy in soccer teams: a systematic review

Area of Science:

• Sports Psychology
• Team Dynamics
• Performance Analysis

Background:

• Collective efficacy, a group's shared belief in its capability, is crucial for sports team dynamics.
• It influences individual motivation, collective effort, and persistence in soccer players.
• Understanding its assessment is vital for improving team performance.

Purpose of the Study:

• To systematically review how collective efficacy is assessed in soccer.
• To identify indicators, attributes, and psychometric properties of instruments used.
• To evaluate the validation processes of these assessment tools.

Main Methods:

• Systematic review following PRISMA guidelines.
• Searched multiple databases using keywords in English, Spanish, and Portuguese.
• Included 22 original scientific articles on collective efficacy in soccer.

Main Results:

• Identified five instruments (FCEQ, CEQS, CEI, CEC, CEQsoccer) assessing technical-tactical and psychological attributes.
• Most studies focused on content validity and reliability (internal consistency).
• Limited evidence of comprehensive psychometric validation for collective efficacy instruments in soccer.

Conclusions:

• Existing instruments for measuring collective efficacy in soccer lack robust psychometric validation.
• This limitation hinders a complete understanding of collective efficacy in the sport.
• Further research is needed to develop and validate reliable assessment tools.