Test di attitudini o di conoscenza di contenuti specifici? Validità predittiva di diversi tipi di prove d'accesso all'università (di Giuseppe Favretto, Margherita Pasini, Massimiliano Pastore) -ABSTRACT:Three different selection test for matriculation have been analysed in order to verify which type of items better previews university performance. Each test has different kind of items: Medicine test mostly contains items on specific contents in biology, chemistry, physic and mathematics, with few items on logic reasoning and general culture. Law test contains only attitu-dinal items, while Motor Sciences test has a balanced situation between items on specific contents (biological an pedagogical items) and attitudinal ones. In order to confront the tests regressive models have been used with the test score as exogenous variable, and performances in several years like endogenous variables.