States in times of transition to democracy, since the early 1980s, have been using a variety of transitional justice mechanisms as part of measures to account for the past and build a future democratic state. Mechanisms, such as trials, truth commissions, reparations, lustration, museums, and other memory sites have been employed either single-handedly or in a combined form to address past human rights violations. Diverse studies ranging from the decision-making process of a choice of strategy through to the implementation of the transitional justice policy and impacts on the transition and future stability of the society in question have been produced by scholars in recent years. One illuminating study in particular that has documented the dramatic new trend of transitional justice and democratization is by Kathryn Sikkink and Carrie Booth Walling (2006). In their research paper described as the "justice cascade", Sikkink and Walling conducting analysis of truth commissions and human rights trials occurring throughout the world from 1979 to 2004 revealed a significant increase in the judicialization of world politics both regionally and internationally. Of the 192 countries surveyed, 34 have used truth commissions, and 50 had at least one transitional human rights trial.