(This is an excerpt from the book Pomodoro Technique Illustrated)
In 1933 Hedwig von Restorff performed a set of memory experiments. Her conclusion was that an isolated item, in a list of otherwise similar items, would be better remembered. If I read a shopping list with one
item highlighted in azure blue, it’s more likely that I remember the highlighted item than any of the others. This is now identified as The
Von Restorff effect.
The Now List is not another artifact in Pomodoro Technique® (created by Francesco Cirillo). It’s my name for a concept: what I give my attention to right now. The cardinality of my Now List is binary. Either I focus on 1 activity or 0 activities. It can
never be 2, 3, 4 or any other number of activities. Before I wind up the clock, I choose one single activity. My challenge during a 25 minute Pomodoro is to not give another activity attention for a minute or two.
The Von Restorff effect tells me that I can provoke my memory to store things that I highlight. I may use a highlighter felt-tip pen to mark the current activity on the To Do Today sheet. Or I can explicitly write the
activity title on a slip of paper and put it in front of me.