AVALIAÇÃO DOS CIENTISTAS: UTILIZAMOS AS MÉTRICAS CORRETAS?

SCIENTISTS’ ASSESSMENT: ARE WE USING THE CORRECT METRICS?

The use of metrics to evaluate scientists is widespread in the present time, with implications for hiring, fellowships, and research grants. Such fact requires that metrics must be constantly scrutinized to be improved. This work analyzes the use of metrics in the area of chemistry in Brazil and discusses its limitations and shortcomings. The main findings indicate that the use of the impact factor must be complemented by the cited half-life of the journals, and a composite metric named influence factor is proposed, similar to the R-impact. The h-index is not a good metric anymore because does not correct for authorship inflation. The individual h-index (h_i), which takes into account fractional counting of citations, is more reliable than the h-index. An analysis on the use of h_i-index with randomly selected 15 Brazilian chemists among the top 500 more productive shows an important effect on the ranking order.