They can be formulated prospectively or retrospectively. These scales have been derived by retrospectively matching characteristics of people with their outcomes. Many statisticians besides Elo have devised similar methods to retrospectively rate players. Taxation law has on multiple occasions been changed to retrospectively disallow tax avoidance schemes. The amendments were expressed to operate retrospectively. Cinema historians and critics defined the category retrospectively. The situation of retrospectively regularising legislation passed without Royal Assent had to be dealt with. Comparatively few awards are presented retrospectively. He played in one retrospectively recognised Test match for England. The power of judges to make new law and retrospectively criminalise behaviour is also discouraged. International matches have been played since 1844 and Test cricket began, retrospectively recognised, in 1877. Mind-wandering is studied using experience sampling either online or retrospectively. Retrospectively, the game has also been critically well received. Retrospectively, that might have been a danger sign. Retrospectively, this became labelled 'the cognitive revolution'.