something along these lines, perhaps (untested)? 
sub new_question {
    my $self = shift;

    my $class = ref $self;
    ( my $question_class = $class ) =~ s{::Quiz$}{::Question};
    ( my $question_module = $class ) =~ s{::}{/}g;

    my $question = eval { require "$question_module.pm" } 
                 ? $question_class->new( @_ )
                 : NHB::QuizMaster::Question->new( @_ )
                 ;
                
    push @{ $self->questions }, $question;
    $question;
}

[download]

In reply to Re: Calling chains, extends, and subclassing by mreece
in thread Calling chains, extends, and subclassing by EvanCarroll

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