This is an expectation which may well have been frustrated in the experimental situation.
There is also a need for comparison studies to see what differences there are between the experimental situation and the classroom.
When families enter, they can take a brief quiz, making predictions after looking at photos of experimental situations.
Despite this, infections have been induced in other animals (both under natural and experimental situations) although these were always asymptomatic.
They created an experimental situation to study it, and then reported on what they found.
You like to analyse, test, and experience things in an experimental situation.
Therefore, describing an experimental situation to participants and then asking them to respond normally will produce responses that are suspect.
In some respects these accounts are similar to those in the experimental situation where key characteristics were found to be a common strategy.
This leaves the experimental situation at a certain disadvantage.
This is not the case in experimental situations.