Sexual attitudes and the Changing Times Sexual attitudes have changed in the last 50 years, not so much sexual behavior but societies attitude towards it.  Sexual attitudes had undoubtedly become more permissive over the last 30 years. The biggest change in attitude to sexual behavior came in the 1980’s and 1990’s. Although sexual behavior has not really changed through the years, attitudes have changed. While it is true that sexual behavior (acts) has not changed the moral attitude has.