The WFIRST Preparatory Science (WPS) programs support efforts
to bridge from basic theory to observational modeling for an
implementation of NASA's WFIRST mission. The goal of
the WPS initiative is to engage a broad section of the
astronomical community into working on the science of
WFIRST. Selected WPS science investigations will (1)
be directly relevant to WFIRST's primary astrophysics goals,
and (2) consist predominantly of WFIRST-specific development
of detailed simulations and models. Abstracts of the
accepted WPS programs can be found at the
GSFC WFIRST site.