COURANT 1963 and ALFF 1965 , using ${{\mathit \Sigma}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit e}^{+}}{{\mathit e}^{-}}$ decays (Dalitz decays), determined the ${{\mathit \Sigma}^{0}}$ parity to be positive, given that $\mathit J = 1/2$ and that certain very reasonable assumptions about form factors are true. The results of experiments involving the Primakoff effect, from which the ${{\mathit \Sigma}^{0}}$ mean life and ${{\mathit \Sigma}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}$ transition magnetic moment come (see below), strongly support $\mathit J = 1/2$.