Replicating Sachs and Warner’s Working Papers on the Resource Curse

This article reports on my attempt to replicate Sachs and Warner’s 1995 and 1997 resource curse working papers. The 1995 paper is not replicable for lack of a data archive. Pure replication of the 1997 paper is achieved. Statistical replication determines that the proposed institutional causes of the resource curse are not robust to country sample. Scientific replication shows that findings of a resource curse are not sensitive to different measures of resource intensiveness, though they are sensitive to estimation technique. Typographical errors in the published paper reveal the value of researchers making both their data and code available.     

The language that unites and the language that divides us: Why was Arabic kept and Serbo-Croatian abolished?

This article explores why the Arabs chose to keep a common language, while the Serbs, Croats, Bosniaks and Montenegrins chose not to. The study argues that the main reason for this can be found in the ideological constrains resulting out of the salience and interaction between different religious and ethnic group building projects in former Yugoslavia and the Arab states. Political elites in both regions favored the ethnic and religious category to different extents. Language planning reflected and implemented the respective ideological imperatives resulting out of these processes. This led to different approaches in defining the common language and its subsequent standardization.     

Non-biased lineup instructions do matter – a problem for older witnesses

Abstract

From the limited literature on older witnesses’ identification performance it is known that they are less accurate on lineups compared to younger witnesses. What is less certain is why they show this age deficit and what can be done to aid their performance. Witnesses forgot being given non-biased lineup instructions informing witnesses that the perpetrator may or may not be present. More older witnesses than younger witnesses forgot and witnesses who failed to report remembering these instructions were significantly less accurate on the lineups. In addition, the current study investigated the use of sequential lineup presentation and stringent decision criteria to aid the performance of older witnesses. Sequential presentation was beneficial to both younger and older adults when the lineup was target absent (TA) but was detrimental when the lineup was target present (TP). Stringent decision criteria had no significant beneficial effect. Future directions for aiding older witnesses’ performance are discussed.