Complex sentence: Mothers wages are penalized more in states where motherhood is perceived to be a woman's choice and a hiring experiment showed that mothers are discriminated against more strongly, in terms of hiring and salary recommendations, when understandings of choice are primed.
Split into simpler sentences: Mothers wages are penalized more in states where motherhood is perceived to be a woman's choice. A hiring experiment showed that mothers are discriminated against more strongly, in terms of hiring and salary recommendations, when understandings of choice are primed.