[en] In < t-bar t>-scenarios for dynamical electroweak symmetry breaking, the presence of a very large t-quark condensate necessarily generates as s is formed from d self-energy transition which will contribute exclusively to ΔI = 1/2 strangeness-changing matrix elements. This contribution is calculated and compared to the purely perturbative contribution, which is well-known to be far too small to have an appreciable effect on ΔI = 1/2 strangeness-changing matrix elements after mass-shell renormalization subtractions are taken into account. The ratio between the t-quark condensate's contribution and the standard-model perturbative contribution to the mass-shell renormalized s is formed from d self-energy transition is shown to be of order modul m_t < t-bar t> modul/M⁴_W, suggesting that the large t-quark condensate proposed for electroweak symmetry breaking may also be responsible for the ΔI = 1/2 enhancement of strangeness-changing decays. (author). 16 refs, 2 figs