Gamma decays of excited states of ¹¹B, ¹⁴C, ¹⁸Ne, ¹⁹Ne, and ²⁶Si have been studied experimentally and the results used to test the predictions of various nuclear models. The phase-consistent Rose and Brink treatment of electromagnetic transitions was used throughout. States of ¹¹B and ¹⁴C were studied using the reactions ¹²C(t,α)¹¹B and ¹²C(t,p)¹⁴C in conjunction with a conventional charged particle-gamma ray coincidence angular correlation technique. For the ¹¹B, 4.44 MeV, J=⁵⁄₂ level previous measurements of the ground state decay mixing ratio were confirmed (δ = −0.19 ± 0.015). For the ¹¹B, 5.02 MeV level the spin was found to be ³⁄₂; the mixing ratio of the (88 ± 2.5%) transition to the ground state was measured to be δ = 0.03 ± 0.05, and that of the 5.02 → 2.12 MeV transition δ = −0.05 ± 0.2. The results for both ¹¹B levels are in substantial agreement with the predictions of intermediate coupling calculations.