1,721,106 research outputs found
Gas Exchanges of flag leaf of wheat: effect of sowing time and water availability on different field-grown genotypes
No full textSUPPORTO ORGANIZZATIVO: VALIDAZIONE DELLA VERSIONE ITALIANA DELLA SURVEY OF PERCEIVED ORGANIZATIONAL SUPPORT (VERSIONE A 8 ITEM)
No full textRiassunto. Obiettivo del presente lavoro è quello di studiare l’attendibilità e la validità
della versione italiana Survey of Perceived Organizational Support (a otto item). In un
primo studio, lavoratori di tre diversi contesti hanno compilato il questionario (N totale
= 550): aziende private, scuole pubbliche ed enti di formazione. L’analisi fattoriale
confermativa, usando il metodo multi-sample, ha verificato che un modello nel quale
tutti gli item saturino in un singolo fattore fitta con i dati nei tre gruppi. Successive
analisi hanno inoltre evidenziato l’invarianza fra i gruppi delle saturazioni fattoriali di
tre item. L’omogeneità della scala risulta buona. In un secondo studio, con 117 partecipanti,
è stata somministrata la scala di supporto ad otto item, i restanti item che compongono
la scala completa e la scala di organizational commitment. I risultati indicano
un’accettabile validità convergente. Ulteriori studi necessitano per indagare la validità
discriminante
La régulation du comportement d’exercice et les raisons de l’activité physique: la validation italienne des questionnaires BREQ et MPAM-R
No full textBased on self-determination theory, the purpose of the present study was to provide the first Italian validation of two different instrument to assess the exercise behaviour: the Mullan et al.'s (1997) BREQ which measures external, introjected, identified and intrinsic forms of regulation and Ryan et al.'s (1997) MPAM-R, which assesses five distinct motives for physical activity (appearance, health and fitness, social, competence, and enjoyment). Confirmatory factor analysis conducted on data collected from 1995 students attending three different secondary schools empirically supported respectively the four-factor structure of behavioural regulation and the five-factor structure of motives for physical activity, supporting convergent and discriminant validity of both scales. Furthermore, multi-group confirmatory factor analysis showed the invariance of the factor structures, structural parameters and correlations of the two scales across gender. Criterion-related validity of the scales also received partial empirical support. Finally, the factor structure of behavioural regulation and motives for physical activity was empirically supported when both constructs were included in a single measurement model.Sur la base de la théorie de l’auto-détermination, le but de cette étude est de proposer la validation de deux instruments différents pour l’évaluation du comportement d’exercice : le BREQ de Mullan et a. (1997), qui mesure les formes externe, introjectée, identifiée, et intrinsèque de la régulation, et le MPAM-R de Ryan et al. (1997), qui évalue cinq raisons distingués de l’activité physique (apparence, santé et forme physique, sociale, compétence, et amusement). L’analyse factorielle confirmatoire, conduite auprès de 1995 étudiants inscrits à trois lycées différents, a soutenu empiriquement la structure à quatre facteurs de la régulation du comportement ainsi que la structure à cinq facteurs des raisons de l’activité physique. De plus, l’analyse confirmatoire multi-groupe a montré l’invariance des structures factorielles, des paramètres structuraux, et des corrélations des deux échelles en relation au genre sexuel. La validité critériée des échelles a aussi reçu un soutien empirique partiel. Enfin, la structure factorielle de la régulation du comportement et des raisons de l’activité physique a été soutenue empiriquement lorsque les deux construits ont été inclus dans le même modèle de mesure
Il processo di costruzione della rappresentazione della formazione nei contesti organizzativi
No full textIndividual and contextual determinants of innovative work behaviour: Proactive goal generation matters
No full textThis study examines the extent to which proactive goal generation is a self-regulatory mechanism that explains how individual and contextual factors influence employee innovative work behaviour. Specifically, it is proposed that learning goal orientation (LGO), psychological climate for innovation, and task variety positively and indirectly influence innovative behaviour via proactive goal generation activities, namely envisioning and planning. Additionally, LGO is expected to positively moderate the planning-innovation link. Based on data collected at two points in time on a sample of 107 employees from 12 small Italian enterprises, we found that envisioning and planning mediated the positive impact of LGO, psychological climate for innovation, and task variety on innovative behaviour. Furthermore, the relationship between planning and innovative behaviour was stronger when LGO was higher. Theoretical and managerial implications of these findings are discussed
Effect of drought stress on photosynthetic characteristics, growth and sugar accumulation of field-grown sweet sorghum
No full textValidazione della scala di motivazione al lavoro (MAWS) nel contesto italiano: evidenza di un modello a tre fattori
No full textIn line with the Self-Determination Theory (SDT), the scale of motivation at work (MAWS) was developed through a multi-dimensional approach and validated in English and French language. This work examined the structure of the MAWS in Italian organizational context. By using two samples (Study 1, N = 525; Study 2, N = 465), the results of exploratory factor analysis (Study 1) suggested a structure of work motivation organized in three factors: autonomous, introjected and external motivation, confirmed by a confirmatory (Study 2). The convergent and discriminant validity of the subscales was assessed. We discussed the importance of this scale for the development of future research based on SDT in the organizational context
The role of the personal, social and cultural aspects on entrepreneurial intention: a cross-cultural research
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