How Anti-Introspectionist is Theory Theory?

Introspection is often seen as criterion to
distinguish between theory theory (TT) and simulation
theory (ST). Many empirical arguments against ST rely
upon the thesis that ST is introspectionist and that it
presupposes the Cartesian dictum that the mind is
transparent to itself. According to Perner 1999 the capacity
to introspect is so important for ST that it can be seen as
the criterion that distinguishes ST from TT: "These two
positions and their sub-varieties differ as to whether they
presuppose or explain the ability to introspect. Theory
theory is extremely anti-introspectionist. Traditional
simulation is based on the ability to introspect one's own
mental states." (Perner 1999)