Measurement invariance of the short version of the problematic mobile phone use questionnaire (PMPUQ-SV) across eight languages

The prevalence of mobile phone use across the world has increased greatly over the past two decades. Problematic Mobile Phone Use (PMPU) has been studied in relation to public health and comprises various behaviours, including dangerous, prohibited, and dependent use. These types of problematic mobile phone behaviours are typically assessed with the short version of the Problematic Mobile Phone Use Questionnaire (PMPUQ-SV). However, to date, no study has ever examined the degree to which the PMPU scale assesses the same construct across different languages. The aims of the present study were to (i) determine an optimal factor structure for the PMPUQ-SV among university populations using eight versions of the scale (i.e., French, German, Hungarian, English, Finnish, Italian, Polish, and Spanish); and (ii) simultaneously examine the measurement invariance (MI) of the PMPUQ-SV across all languages. The whole study sample comprised 3038 participants. Descriptive statistics, correlations, and Cronbach's alpha coefficients were extracted from the demographic and PMPUQ-SV items. Individual and multigroup confirmatory factor analyses alongside MI analyses were conducted. Results showed a similar pattern of PMPU across the translated scales. A three-factor model of the PMPUQ-SV fitted the data well and presented with good psychometric properties. Six languages were validated independently, and five were compared via measurement invariance for future cross-cultural comparisons. The present paper contributes to the assessment of problematic mobile phone use because it is the first study to provide a cross-cultural psychometric analysis of the PMPUQ-SV

Identity development, intelligence structure, and interests: a cross-sectional study in a group of Italian adolescents during the decision-making process

Monica Pellerone,1 Alessia Passanisi,1 Mario Filippo Paolo Bellomo2 1Faculty of Human and Social Science, “Kore” University of Enna, Enna, 2Credito Emiliano Bank, Piazza Armerina, Italy Background: Forming one’s identity is thought to be the key developmental task of adolescence, but profound changes in personality traits also occur in this period. The negotiation of complex social settings, the creation of an integrated identity, and career choice are major tasks of adolescence. The adolescent, having to make choices for his or her future, has not only to consider his or her own aspirations and interests but also to possess a capacity for exploration and commitment; in fact, career commitments can be considered as a fit between the study or career that is chosen and personal values, skills, and preferences. Methods: The objective of the study reported here was to investigate the role of identity on profile of interests; the relation between identity and decisional style; the correlation between identity, aptitudes, interests, and school performance; and the predictive variables to school success. The research involved 417 Italian students who live in Enna, a small city located in Sicily, Italy, aged 16–19 years (197 males and 220 females) in the fourth year (mean =17.2, standard deviation =0.52) and the fifth year (mean =18.2, standard deviation =0.64) of senior secondary school. The research lasted for one school year; the general group of participants consisted of 470 students, and although all participants agreed to be part of the research, there was a dropout rate of 11.28%. They completed the Ego Identity Process Questionnaire to measure their identity development, the Intelligence Structure Test to investigate aptitudes, the Self-Directed Search to value interests, and General Decision Making Style questionnaire to describe their individual decisional style. Results: The data showed that high-school performance was positively associated with rational decision-making style and identity diffusion predicted the use of avoidant style. Interests were related to identity exploration; the differentiation of preferences was related to identity commitment; investigative personality correlated with the rational style and negatively with the spontaneous style and high levels of school performance; and social personality correlated with the use of the spontaneous style and the intuitive style, a high-profile identity, and identity exploration. Conclusion: Intervention in the development of the identity process proves to be fundamental for increasing aptitudes and improving school performance, and, above all, for broadening the diversification and coherence of interests and improving the decisional process. Keywords: adolescence, identity status, intelligence structure, interest, personalit

The Transition from Middle School to High School: The Mediating Role of Perceived Peer Support in the Relationship between Family Functioning and School Satisfaction

The study focused on the transition from middle school to high school and aimed to verify the mediating role that perceived peer support may play in the relationship between family functioning in middle school and school satisfaction in high school. In middle school (Wave 1), participants were 208 adolescents (106 boys and 102 girls) aged 12–13 years (M=12.56; SD =.61), attending the last classes of two middle public schools located in Italy. One year later (Wave 2), 155 adolescents (76 boys and 79 girls) participated again in the study when they attended the first classes of high school (M=13.91; SD=.75). Participants completed the Italian Version of Family Assessment Device and the Social Support Questionnaire (short from) in Wave 1 and the Multidimensional Students’ Life Satisfaction Scale in Wave 2. Results showed that among family functioning dimensions, only affective involvement positively predicted perceived peer support and school satisfaction. The mediation models showed that perceived peer support in middle school mediated the relationship between affective involvement in middle school and school satisfaction in high school. Our results confirm the role of subjective perception of peer support in contributing to the prediction of school satisfaction beyond good parental affective involvement

Muscle Dysmorphia in Adolescence: The Role of Parental Psychological Control on a Potential Behavioral Addiction

Objective The study investigated the relationship between psychological parental control and muscle dysmorphia in adolescence, as form of exercise dependence, focusing also on the role of pathological worry. Methods Participants were 312 adolescents (140 boys and 172 girls) aged 16 to 18 years (M= 17.05; SD = 0.85) and completed the Muscle Dysmorphia Disorder Inventory, the Dependency-oriented and Achievement-oriented Parental Psychological Control, and the Penn State Worry Questionnaire. Results The results highlighted that boys showed higher level than girls in dependency-oriented and achievement-oriented parental psychological control and muscle dysmorphia. Furthermore, girls showed higher levels of pathological worry than boys. Pathological worry partially mediated the relationship between dependency-oriented parental psychological control and muscle dysmorphia as well as between achievement-oriented parental psychological and muscle dysmorphia. Psychological parental control predicted muscle dysmorphia, and pathological worry seemed to act as a partial mediator in this relationship. Conclusions Psychology parental control and pathological worry are linked to muscle dysmorphia, but psychological parental control seems to frustrate the need for autonomy of adolescents and, therefore, muscle dysmorphia may become the maladaptive answer to react to the excessive control of their parents. It seems that body of adolescents may become the scenario towards which they play a sort of power of control to counteract anxiety deriving from the excessive psychological control played by parents

Cyclin E/CDK2 and feedback from soluble histone protein regulate the S phase burst of histone biosynthesis

Summary: Faithful DNA replication requires that cells fine-tune their histone pool in coordination with cell-cycle progression. Replication-dependent histone biosynthesis is initiated at a low level upon cell-cycle commitment, followed by a burst at the G1/S transition, but it remains unclear how exactly the cell regulates this burst in histone biosynthesis as DNA replication begins. Here, we use single-cell time-lapse imaging to elucidate the mechanisms by which cells modulate histone production during different phases of the cell cycle. We find that CDK2-mediated phosphorylation of NPAT at the restriction point triggers histone transcription, which results in a burst of histone mRNA precisely at the G1/S phase boundary. Excess soluble histone protein further modulates histone abundance by promoting the degradation of histone mRNA for the duration of S phase. Thus, cells regulate their histone production in strict coordination with cell-cycle progression by two distinct mechanisms acting in concert

Minimally invasive percutaneous anterior odontoid screw fixation: institutional experience with a simple and effective technique

Background: To show a novel modified technique to perform minimally invasive anterior odontoid screw fixation. Methods: Twenty-nine patients with a mean age of 45 years were treated with a modified percutaneous anterior odontoid screw fixation. All patients were affected by Type II or rostral shallow Type III odontoid fractures. A modified guide tube was used in all these patients, with reduction of soft tissue dissection for percutaneous approach. Results: There were no complications related to the modified technique. Good results and optimal screw placement were achieved in 28 out of 29 patients. Only in 1 patient we observed, after mobilization, screw displacement, probably due to severe osteoporosis. Conclusions: In our opinion, this modified percutaneous minimally invasive technique for anterior odontoid screw fixation, along with the use of a soft tissue dilator not fixed to the spine, has not yet been reported in literature and is strongly recommended to reduce invasiveness of odontoid screw placement