Final answer:
The trend not discussed in the textbook is that 'Women are now working more hours than men.' The textbook covers the gender pay gap, glass ceiling effects, and the economic impact of sexism on women's earnings, but not the comparative number of working hours between genders.
Step-by-step explanation:
The trend that was NOT discussed in your textbook regarding gendered labor force participation and employment is 'Women are now working more hours than men.' The trends that were mentioned include the gender pay gap, glass ceiling effects, and various aspects related to women and employment. For instance, the textbook talks about the persistent gender pay gap, how women undertake more unpaid work such as household chores, and how sexism can affect a woman's earnings throughout her life. Additionally, the devaluation of occupations as more women join them was discussed. However, there is no mention of women working more hours than men, which suggests that this is a trend not covered in your textbook.