Following completion of the task, subjects were also debriefed about their subjective experience during the task, including whether they had "seen" one or more of the brief targets.
In the second, known as the Go/No Go task, subjects are flashed a set of faces with various expressions.
After practicing with simple dots (to make sure they understood the task), subjects were shown 144 different displays with various letters and numbers.
Several minutes after the task, subjects were asked to write down the words.
For the timing task, subjects produced a series of 5-s intervals.
In the execution task subjects were asked to make speeded button presses according to instruction cues.
For the time preference elicitation task, subjects choose between two options (a monetary example is shown in Table 2).
For each task, subjects privately roll a die, whose value determines the tax rate, which is then reported by subjects.
In a name-matching task, subjects decided whether two letters had the same or a different name (e.g., A a); in a physical-matching task, subjects decided whether two letters were exactly the same or different (e.g., A A); in a non-letter-matching task, subjects decided whether two non-letters were exactly the same or different.
For the detection task, subjects detected a mean 12% more manipulated images than would be expected by chance alone, 95%CI[1010%, 13%].
Table 1 comprises the experiments reviewed in the following chapters and summarizes in brief the particular task subjects had to solve.
