Multiplicity fraction as a function of primary mass; mass bins are represented with x-axis error bars with the average value for the SACY targets being the red markers. Fractions have been corrected using the techniques outlined in Sect. 5.0.2. The same data (Nguyen et al. 2012) shown in Fig. 6 has been transformed from spectral type to mass by assuming an age of 1 Myr and 2 Myr for Tau-Aur and Cha I respectively, using T_eff from Luhman (2004) and Sestito et al. (2008) with isochrones explained in Fig. 2.