Do Educated Women Get Less Pleasure Out of Intercourse?

It's supposed to be harder for more educated women to experience orgasm, because they tend to never really relax.

A study carried out in Germany showed that the quality of sex for educated women was poorer than for the rest. 62% of woman with university degrees or advanced education said they had difficulties in experiencing orgasm, while only 38% of women with lower education experience similar difficulties. Surely, the level of education is connected with greater responsibility at the workplace, which also causes greater stress. More than 2000 women aged between 18 and 49 were included in the study.