Make sure to allow time during the presentation period to compare and contrast the cases and the various "push" and "pull" factors behind their migrations.
My personal experience shows the big part of the students until the presentation period do not have learned the teaching material week in week out just have visited the presentations or simple stayed at home.
Following a playback presentation, the experimenter measured the distance moved towards or away from the speaker by the subject during the presentation period, relative to its starting location.
Each addition problem was displayed for 4.5 seconds even when a response was given before the end of the presentation period.
In the 'verbal rehearsal task', subjects were instructed to vocalize the four sample letters internally one time in the presentation period and then to rehearse them throughout the delay period.
In the 'verbal rehearsal task', subjects were instructed to vocalise four sample letters internally one time in the presentation period and then to intensely rehearse them throughout the delay period.
The responses measured were the latency from the beginning of the playback presentation until the subject looked towards the speaker, the duration of looking during the presentation period, and the time taken for the subject to start moving after the beginning of the playback.
The video observer measured the latency from the beginning of the playback presentation until the subject looked towards the speaker, and the duration of looking during the presentation period (240 s in total; i.e. 60 s of playback and 180 s of post-playback observation).
For this purpose, PSTHs were calculated for each contrast with a bin width of 0.8 1.2 sec (this corresponds to twice the grating presentation period).
On the other hand repeating the same comparison, but for the immediate pre- and post hint presentation period of hints that were presented after timeout (Fig. 2C), yielded a significant cluster in the upper alpha frequency band (10 12 Hz).
This is visible in the conditions where the intervening continuous presentation period contained either one or three perceptual switches (left plots), and therefore ended in the percept opposite to the previous winner (see diagrams).
