  Simplified models are an important tool for the interpretation of searches
for new physics at the LHC. They are defined by a small number of new particles
together with a specific production and decay pattern. The simplified models
adopted in the experimental analyses thus far have been derived from
supersymmetric theories, and they have been used to set limits on
supersymmetric particle masses. We investigate the applicability of such
simplified supersymmetric models to a wider class of new physics scenarios, in
particular those with same-spin Standard Model partners. We focus on the pair
production of quark partners and analyze searches for jets and missing energy
within a simplified supersymmetric model with scalar quarks and a simplified
model with spin-1/2 quark partners. Despite sizable differences in the
detection efficiencies due to the spin of the new particles, the limits on
particle masses are found to be rather similar. We conclude that the
supersymmetric simplified models employed in current experimental analyses also
provide a reliable tool to constrain same-spin BSM scenarios.
