An electromechanical analyzer using histogram techniques.
A 1967 electromechanical box gave us the first auto-histograms of behavior, the grandparent of every digital data app you use.
01Research in Context
What this study did
The team built a box that sorts behavioral events for you.
It drops each response into time bins like coins in a coin sorter.
The machine stores duration, interval, and when each event happened.
What they found
The hardware worked. It turned messy lever presses into clean histograms.
No more hand tallying or stopwatch errors.
How this fits with other research
POLIDORNEVIN et al. (1963) came first. They wired a cumulative recorder to also catch heartbeats.
Caggiano et al. (1967) swapped the heartbeat line for histogram bins. Same idea, sharper output.
Falligant et al. (2024) still use the same trick. Today they call the bins ‘bouts’ and ‘pauses’ and fit them with math, but the spirit is identical.
Why it matters
Every data app you open today still copies this 1967 box. When you set a 10-s bin size in your software, you are using the grandchild of this machine. Remember the roots and you will pick cleaner settings and spot artifacts faster.
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02At a glance
03Original abstract
In behavioral studies it is often necessary to classify events and store the number of events occurring in each classification. The classification requirements may be either functions of amplitude (i.e., intensity, force, peaks, etc.) or time (i.e., duration, interval, etc.). The following describes an analyzer capable of classifying events according to their duration, interval, or time of occurrence, and storing and displaying the number of such events in each classification.
Journal of the experimental analysis of behavior, 1967 · doi:10.1901/jeab.1967.10-169