The current study examined patterns of normative change and cohort effects in body image across the male and female adult lifespan. Body satisfaction was assessed in longitudinal data spanning six years, from 2010 to 2015. Cohort sequential latent growth curve modelling was utilized to assess patterns of mean-level change due to both aging and cohort effects in 15,264 participants (62.9 % women) aged between 18–94 years (M = 46.55, SD = 14.24). Results demonstrated a very slight increase in body satisfaction across the lifespan for both men and women. Cohort effects demonstrated that for women aged 54 years and below, all but two cohorts (24–29 and 34–39 years) displayed an upward trajectory in their body satisfaction over the 5-year period of assessment. No consistent cohort effects were evident for men. Finally, men, relative to women, consistently displayed higher levels of body satisfaction across the lifespan. This study provides insights into the trajectory of body image across the lifespan for men and women. The findings also suggest recent (cohort) improvements in body image for women, and potential explanations for this unexpected shift are discussed.

目前的研究检查了男性和女性成年期身体形象的规范变化模式和队列效应。身体满意度在 2010 年至 2015 年六年的纵向数据中进行评估。队列顺序潜在生长曲线模型用于评估年龄在 18 岁之间的 15,264 名参与者（62.9 % 女性）因衰老和队列效应导致的平均水平变化模式–94 岁 ( M = 46.55, SD= 14.24）。结果表明，男性和女性在整个生命周期内的身体满意度都略有增加。队列效应表明，对于 54 岁及以下的女性，在 5 年的评估期内，除了两个队列（24-29 岁和 34-39 岁）之外，所有女性的身体满意度都呈上升趋势。男性没有明显的一致队列效应。最后，相对于女性，男性在整个生命周期中始终表现出更高的身体满意度。这项研究提供了对男性和女性一生中身体形象轨迹的见解。研究结果还表明，最近（队列）女性身体形象的改善，并讨论了这种意外转变的潜在解释。