فهرست مطالب shirin hosseinzadeh

The purpose of this study was to survey and compiling a talent identification model for volleyball elite players. The statistical population of this study was all elite volleyball boys’ players in ardabil city. Among the statistical population, 16 individuals were selected as a sample. All tests were performed on three consecutive days. On the first day, anthropometric features including lengths, environment, latitudes as well as body composition were measured. Then on the second day, the physiological and physical fitness features including: anaerobic capacity, agility, speed, muscle strength, reaction time, coordination, and power were taken. Finally, on the third day, the flexibility, muscular endurance and cardiorespiratory fitness were taken. SPSS software version 23 was used for statistical analysis and excel software was used for charts. The results showed that ardabil players are at a low level physiologically and anthropometric. The results of the study showed that the average speed of players was 5.92 seconds, the mean agility was 12.09 seconds, the average anaerobic capacity was 426 watts, the mean cardiorespiratory endurance was 43.24 ml / kg/min, the mean set up 44. 12 per minute The mean of vertical jump was 52.5 cm, the mean flexibility of 43.51cm, the average power of 50.56 kg, the mean coordination of 66.06 min / min, the mean time of the reaction time was 0.3152, as well as the mean height of 183.45 cm, the mean of the sitting high 94.10 cm, the mean of the wingspan was 194.35 cm, the mean palm length was 11.11 cm, the average fat percentage was 21.38 kg, and the average fat mass was 62.86 kg. The results indicate that the players in ardabil are at the lower level in terms of anthropometric and physiological indices. From the finding of this study, it can be conducted that the players of the present research study were low on anthropometric and psychological characteristics and these players are weak and have deficiency in terms of physiological and physical fitness that are modifiable defects, more than anthropometric.

The aim of this study was to predict social adjustment based on the variables of parenting style, perfectionism and creative thinking in ninth grade students in Rasht city. The research method was descriptive-correlational and the statistical population included all ninth grade girls in public and non-profit schools in Rasht in the academic year 2020-2021, from which 150 people were selected as the statistical sample by available sampling method. To collect data ,Bell Adaptation Questionnaire (1961), Bamrind (1967) parenting styles, Hill et al. (2004) Perfectionism Scale, and Welch and McDowell (2002) Creative Thinking Skills Assessment were used. Data analysis was done using Pearson's correlation coefficient and multiple regression analysis in a step-by-step manner.Findings also showed that there is a significant relationship between social adjustment with parenting styles (authoritarian and authoritarian), perfectionism and creative thinking (p ˂ 0.01). The results of regression analysis revealed that among the components of parenting styles, authoritarian style in a negative way with a beta coefficient of -2.74 and authoritative style in a positive way with a beta coefficient of 4.29 equal to the predictability of social adjustment variables. Also, perfectionism and creative thinking each have beta coefficients of 0.37 and -0.24, respectively, for social adjustment, which shows that the predictor variables of perfectionism are positive and creative thinking is negative. Provide criteria for explaining the variable (p ˂ 0.01). Considering above mentioned finding, it seems that  in order to increase social adjustment, the variables of parenting styles, perfectionism and creative thinking  are essential. The type of parenting methods of parents can have the strongest and most stable effects on the emotional and cognitive development of a child, so that its effects will be manifested during adolescence. Also, perfectionism is one of the personality structures that plays an important role in people's compromise. And one dimension of adaptability is social adaptation, which includes the individual's adaptation to his social environment, so positive perfectionism can have logical strategies for the individual.