(psychology) An actor who participates in a psychological experiment pretending to be a subject but in actuality working for the researcher (also known as a "stooge").
“It follows that awareness that one of D's confederates might commit murder is sufficient to convict D as an accomplice, with a mandatory sentence of life imprisonment.”
confederation
A union or alliance of states or political organizations.
“Hours after the elections, the employers confederation demanded more liberalisation, privatisation and deregulation of the economy, as well as wage controls and cuts in public spending.”
“The European Union can be seen as a confederation of member states, each with their own sovereignty and political representation.”
“How could a company go from the seventh largest in America to a loose confederation of parcels at the bankruptcy fire sale in a matter of months?”