Professional judges in traffic courts sentence many hundreds of offenders per year. Using 639 case files from archives, we compared the Matching Heuristic (MH) to compensatory, weighing algorithms (WM). We modeled and cross validated the models on different subsets of the data, and took several other methodological precautions such as allowing each model to select the optimal number of variables and ordering and weighing the variables in accordance to different logics. We did not reproduce the finding by Dhami (2003), who found the MH to be superior to a compensatory algorithm in modeling bail-granting decisions. These simulations brought out the inner logic of the two family of models, showing what combination of parameters works best. It remains remarkable that using only a fraction of the variables and combining them non-compensatorily, MH obtained nearly as good a fit as the weighing method.

Do folk-economic beliefs have an ultimate cause? We argue that, in many cases, the answer is negative. Cognition is constrained in both scope (via long-term memory [LTM]) and depth (via working memory [WM]). Consequently, laypeople are challenged by concepts essential for understanding complex systems, economics included: aggregation, indirect causation, and equilibrium. We discuss several economic misconceptions arising from this acute mismatch.

Pepper & Nettle (P&N) suggest that the poor present a “contextually appropriate response” to a perceived limited control and to a short life expectancy. We argue that differences in health, behavior, or impaired economic decisions are better explained by self-control. We discuss the implications of the differences between these perspectives and present supporting findings from two intervention studies with marginalized populations.

McCullough et al. suggest that revenge and forgiveness rest upon risk computation. Risk computation is implemented by emotions that evolved for additional functions, giving rise to phenomena such as betrayal aversion and taboo-tradeoffs, and specific patterns of forgiveness we have documented. A complete account of revenge and reconciliation should incorporate broader constructs from social psychology, including emotions and values hierarchies.

Schizophrenics exhibit a deficit in theory of mind (ToM), but an intact theory of biology (ToB). One explanation is that ToM relies on an independent module that is selectively damaged. Phillips & Silverstein's analyses suggest an alternative: ToM requires the type of coordination that is impaired in schizophrenia, whereas ToB is spared because this type of coordination is not involved.

Exploiting existing representations implies tapping an enormous domain, coextensive with human understanding and knowledge, and endowed with its own dynamics of piecewise and cumulative learning. The worth of Clark & Thornton's proposal depends on the relative importance of this dynamics and of the bottom-up mechanism they come to complement. Radical restructuring of theories and patterns of retrieval from long-term memory are discussed in the context of such an evaluation.