Maria Giovanna Caprara

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Five studies document the validity of a new 8-item scale designed to measure positivity, defined as the tendency to view life and experiences with a positive outlook. In the first study (N = 372), the psychometric properties of Positivity Scale (P Scale) were examined in accordance with classical test theory using a large number of college participants. In(More)
The P9 stem-loop is one of the conserved structural elements found in all group-I introns. Using two deletion mutants in this region of the Tetrahymena thermophilia large ribosomal subunit intron, we show that removal of the P9 element, either alone, or together with the non-conserved downstream P9.1 and P9.2 elements, results in an intron incapable of the(More)
The aim of the present paper was to test the cross cultural validity of the Positivity Scale (P Scale), a new questionnaire designed for the measurement of positivity (i.e., general tendency to evaluate self, life, and future in a positive way). Participants (N 3544) from Italy, Germany, Spain, Poland, and Serbia answered eight items of the P Scale and(More)
The catalytic activity of a group I intron is dependent on a core structure, much of which is not exposed to solvent. In order to study the structure of the core, an efficient bimolecular reaction has been developed: the 5'-component is a molecule of about 300 bases which contains the 5'-splice-site and terminates in the loop established by P8, and the(More)
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