Template-Type: ReDIF-Paper 1.0 Author-Name: Claudia Cerrone Author-Name-First: Claudia Author-Name-Last: Cerrone Author-Name: Anujit Chakraborty Author-Name-First: Anujit Author-Name-Last: Chakraborty Author-Name: Hyok Jung Kim Author-Name-First: Hyok Jung Author-Name-Last: Kim Author-Name: Leonhard Lades Author-Name-First: Leonhard Author-Name-Last: Lades Author-Workplace-Name: Department of Economics, University of California Davis Title: Estimating Present Bias and Sophistication over Effort and Money Abstract: We design and conduct a real-effort experiment that jointly estimates present bias and sophistication, without assuming identical present bias and sophistication across money and effort domains. We explain and empirically demonstrate how assuming identical sophistication for money and effort (as in Augenblick et al., 2019) can bias the estimates of key parameters. On average, participants chose to (predicted to) complete 14% (10%) fewer tasks on the same day than on a future day, leading to an estimated present bias βₑ over effort of 0.70–0.79, and an estimated sophistication β̂ₑ of 0.80–0.88. For money, aggregate present bias βₘ is near zero, but substantial heterogeneity exists, with roughly equal numbers of participants exhibiting present bias and future bias. At the individual level, about three quarters of all participants correctly anticipate the direction of their bias in both domains, even if not its full magnitude. Length: File-URL: https://repec.dss.ucdavis.edu/files/r3h8uzuoqldwdlof9w5vl0e8dw15/EEC-2024-0049_R1-2.pdf File-Format: application/pdf Number: 359 Classification-JEL: C91, D81, D90 KeyWords: present bias, sophistication, beliefs, experiment, real effort task, experiment Creation-Date: 20231106 Handle: RePEc:cda:wpaper:359