TY  - JOUR
AU  - Choi,James J.
AU  - Laibson,David
AU  - Madrian,Brigitte C.
TI  - Mental Accounting in Portfolio Choice: Evidence from a Flypaper Effect
JF  - National Bureau of Economic Research Working Paper Series
VL  - No. 13656
PY  - 2007
Y2  - November 2007
UR  - http://www.nber.org/papers/w13656
L1  - http://www.nber.org/papers/w13656.pdf
N1  - Author contact info:
James J. Choi
Yale School of Management
135 Prospect Street
P.O. Box 208200
New Haven, CT 06520-8200
E-Mail: james.choi@yale.edu

David Laibson
Department of Economics
Littauer M-12
Harvard University
Cambridge, MA 02138
Tel: 617/496-3402
Fax: 617/495-8570
E-Mail: dlaibson@gmail.com

Brigitte C. Madrian
John F. Kennedy School of Government
Harvard University
79 JFK Street
Cambridge, MA 02138
Tel: 617-495-8917
Fax: 617-496-5960
E-Mail: Brigitte_Madrian@Harvard.edu
AB  - Consistent with mental accounting, we document that investors sometimes choose the asset allocation for one account without considering the asset allocation of their other accounts. The setting is a firm that changed its 401(k) matching rules. Initially, 401(k) enrollees chose the allocation of their own contributions, but the firm chose the match allocation. These enrollees ignored the match allocation when choosing their own-contribution allocation. In the second regime, enrollees simultaneously selected both accounts’ allocations, leading them to mentally integrate the two. Own-contribution allocations before the rule change equal the combined own- and match-contribution allocations afterwards, whereas combined allocations differ sharply across regimes.
ER  -