Jean Marie Twenge (born August 24, 1971)[1] is an American psychologist researching generational differences, including work values, life goals, and social attitudes.

[6] She has examined generational differences in work attitudes,[7] life goals,[8] developmental speed,[9] sexual behavior,[10] and religious commitment.

[15][16] Twenge co-authored a 2017 corpus linguistics analysis that said that George Carlin's "seven dirty words you can't say on television" were used 28 times more frequently in 2008 than in 1950 in the texts at Google Books.

[22] Twenge responded to Cavanagh in the same publication, citing a meta-analysis and controlled experiments in support of her theories [citations missing], and stating that her article and book had also highlighted positive trends.

She also denied that she was outright opposed to technology: "[S]martphone or internet use of up to an hour or two a day is not linked with mental health issues or unhappiness ...