Без заголовка
Вы как-то странно про "уровень шума для подопытных". Вот, например: In terms of the relative importance, we side with conceptual learning over experiential learning or knowing the details of reality. Yet in terms of scheduling and time allocation in module design, we put experiential learning first and conceptual learning second. It is important not to mix up these priorities.
Это из книжки http://www.impm.org/8pg.htm (конкретно из http://www.impm.org/pdf/mishinaitami.pdf).