Watson (1993) [Measures of fit for calibrated models. Journal of Polit
ical Economy 101 (6), 1011-1041] proposes a procedure for evaluating t
he fit of a dynamic equilibrium business cycle model. Under Watson's c
riterion, the standard real business cycle (RBC) model fails dramatica
lly in reconciling the dynamics of the model with the data. This inabi
lity to account for the dynamics of US aggregate data remains a major
challenge to RBC theory. This paper demonstrates that reasonable modif
ications can bring RBC theory into closer conformity with the data. Th
e empirical results indicate that when habit formation on leisure choi
ce and employment externality are incorporated into the analysis, the
striking spectral density differentials documented by Watson virtually
vanish at business cycle frequencies. (C) 1998 Elsevier Science B.V.
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