Peo­ple who retire ear­ly suf­fer from accel­er­at­ed cog­ni­tive decline and may even encounter ear­ly onset of demen­tia, accord­ing to a new eco­nom­ic study (Note: opens PDF) I con­duct­ed with my doc­tor­al stu­dent Alan Adelman.

To estab­lish that find­ing, we exam­ined the effects of a rur­al pen­sion pro­gram Chi­na intro­duced in 2009 that pro­vid­ed peo­ple who par­tic­i­pat­ed with a sta­ble income if they stopped work­ing after the offi­cial retire­ment age of 60. We found that peo­ple who par­tic­i­pat­ed in the pro­gram and retired with­in one or two years expe­ri­enced a cog­ni­tive decline equiv­a­lent to a drop in gen­er­al intel­li­gence of 1.7% rel­a­tive to the gen­er­al pop­u­la­tion. This drop is equiv­a­lent to about three IQ points and could make it hard­er for some­one to adhere to a med­ica­tion sched­ule or con­duct finan­cial plan­ning. The largest neg­a­tive effect was in what is called “delayed recall,” which mea­sures a person’s abil­i­ty to remem­ber some­thing men­tioned sev­er­al min­utes ago. Neu­ro­log­i­cal research links prob­lems in this area to an ear­ly onset of demen­tia. [Read more…] about Study in Chi­na finds that retire­ment may accel­er­ate cog­ni­tive decline, even for those with sta­ble income