In recent years, congruence properties for the coefficients of mock theta functions have received a lot of attention. In 2021, Wang gave a systematic study on the parity of coefficients of classical mock theta functions. Recently, Chen and Garvan proved a number of congruences modulo 4 for five mock theta functions. In this paper, we show several congruences modulo 3 and 4 for the sixth order mock theta function ψ_ (q) defined by Berndt and Chan.
Jin et al. (Fri,) studied this question.