How was Federico Fellini’s film I vitelloni based on his adolescence in Rimini?

Federico Fellini’s 1953 film I vitelloni is rooted in his own adolescence in Rimini. The film serves as a faithful reflection of the stifling boredom of provincial life that ultimately drove the young Fellini to move to Rome.1

While the film draws directly from his early experiences, it notably omits the more eccentric aspects of his upbringing. Fellini later revisited his youth in his 1973 film Amarcord, which provided a more nostalgic and flamboyant remembrance of his adolescence under fascism, incorporating stories from the life of a childhood friend to capture the eccentricity missing from I vitelloni.2