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The aim of this study is to evaluate the imagery and self-efficacy beliefs of athletes. 35 male and 47 female; totally 82 athletes participated in the study. SIQ and SES scale was used to collect the data. SES (Self-Efficacy Scale) that was developed Riggs et al. (1994) was translated and adapted to Turkish by Öcel (2002). SIQ (Sport Imagery Questionnaire) especially developed for sports and it was designed by Hall et al (1998). Turkish adaptation of inventory was done by Kızıldağ in 2007.. According to t test results by gender comparative comparison, sub dimension of sport imagery questionnaire there is a statistically significant difference at the sub dimension of imagery which is the Motivational Specific Imagery and Motivational General Arousal Imagery (p<0.05). The Correlation results showed that there was a significant relationship between Cognitive Imagery and Self Efficacy; Motivational Specific Imagery and Self Efficacy; Motivational General-Mastery and Self Efficacy (p<0.05). The results of this study reveal that, the imagery change in terms of gender, imagery and self-efficacy beliefs show some relationships and this relationship is observable.

A AB BS S T TR RA AC CT T OOb bj je ec ct ti iv ve e: : This research aims to examine team cohesion beliefs of youth athletes based on gender and team tenure, and team cohesion-collective efficacy relationship in youth sport. M Ma at te er ri ia al l a an nd d M Me et th ho od ds s: : The participants were 180 males (age: 15.41±1.15 year) and 70 females (age: 14.70±1.09 year), 250 athletes in total (age: 15.10±1.16 year), involved youth academies for team sports (football, basketball and volleyball). The Collective Efficacy Scale and Youth Sport Environment Questionnaire were used to assess the athletes' collective efficacy beliefs and perceptions of team cohesion. Descriptive statistics, one-way MANOVA, one-way ANOVA, Pearson Moment correlations, multiple regression and bootstrapping procedures were used to analyze the research data. R Re es su ul lt ts s: : Results showed significant differences on both the task and social dimensions of team cohesion based on the gender of participants (p<0.05). Team cohesion beliefs did not differ based on team tenure (p>0.05). Significant negative correlations were observed between task cohesion and collective efficacy (r=-0.312, p<0.01) and between social cohesion and collective efficacy (r=-0.149, p<0.05). An indirect effect of social cohesion on collective efficacy through task cohesion was observed (β=-0.05, BCa 95% CI=[-0.08 to-0.03]). C Co on nc cl lu us si io on n: : The findings of this study suggest that high social cohesion may have adverse effects on collective efficacy in youth sport settings.

The aim of this study is to examine player-coach relationships and its relevance to motivational processes. The participants of the study were 93 players who played in the matches qualifying for Turkish 1st Women’s Volleyball League in 2018. The study used Player-Coach Relationship Inventory and Motivation in Sports Scale as the data collection instruments. The data obtained were analyzed by using SPSS 20 software, descriptive statistics and Pearson Correlation analysis. The findings of the study revealed no statistically meaningful relationship between player-coach relationship and external motivation and amotivation. However, there was a meaningful relationship between player-coach relationship and internal motivation (r=, 246). Similarly, a meaningful relationship was found between “the duration of player-coach relationship” and the sub dimensions of player-coach relationship, which are “commitment” (r=, 293), “closeness” (r=, 325) and “complementarity” (r=, 325). In short, it can be concluded that as the relationship between players and the coach improves, motivation increases, and as the duration of this relationship increases, player-coach relationship is affected positively.