The rapid influx of boomer women into the labor force that began in the 1970s was marked by the confidence of many in their ability to successfully pursue a career while meeting the needs of their children. This resulted in an increase in latchkey children, leading to the terminology of the "latchkey generation" for Generation X. These children lacked adult supervision in the hours between the end of the school day and when a parent returned home from work in the evening, and for longer periods of time during the summer. Latchkey children became common among all socioeconomic demographics, but this was particularly so among middle- and upper-class children. The higher the educational attainment of the parents, the higher the odds the children of this time would be latchkey children, due to increased maternal participation in the workforce at a time before childcare options outside the home were widely available. McCrindle Research Centre described the cohort as "the first to grow up without a large adult presence, with both parents working", stating this led to Gen Xers being more peer-oriented than previous generations.