Sequential reacquisition as a function of timeout from avoidance.
Keep timeout between 15 and 60 seconds during avoidance tasks; shorter or longer hurts performance.
01Research in Context
What this study did
Researchers tested how long a timeout should last during an avoidance task. They used lab animals that could press a lever to avoid mild shocks. After each session, they gave a signaled timeout break.
They tried timeouts ranging from a few seconds to several minutes. Then they measured how fast the animals responded and how often shocks still happened.
What they found
Timeouts of 15 to 60 seconds gave the best results. Animals responded quickly and got fewer shocks. Very short timeouts (under 15 s) or very long ones (over 60 s) made performance worse.
Surprisingly, the error rate stayed the same no matter the timeout length. Only speed and shock count changed.
How this fits with other research
Davis et al. (1974) showed timeout can accidentally reward mistakes. Their animals kept making the same errors when timeout followed them. The current study flips that idea: here timeout was planned, not a mistake, and it helped when timed right.
Rutter et al. (1987) later proved timeout can act like a reinforcer on a VI schedule. They built on the 1976 parametric work by showing the effect holds across different schedule types.
Solnick et al. (1977) replicated the core idea with children. They found timeout only works if the regular room is more fun than the break room. Together, these four papers show timeout is never neutral; it always functions as a consequence, good or bad.
Why it matters
When you use timeout, think duration first. Aim for about 15–60 seconds for most clients. Shorter gives no relief; longer wastes time and can weaken motivation. Always check whether timeout is actually punishing or accidentally reinforcing the behavior you target.
Want CEUs on This Topic?
The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.
Join Free →Time your next timeout with a stopwatch; stay in the 15–60 s window and record if behavior speeds up or slows down.
02At a glance
03Original abstract
Rats learned to reacquire four similar three-member response sequences. Each sequence member was associated with a different response lever, and the correct sequence of levers (i.e., 3-1-2, 2-1-3, 1-3-2, and 2-3-1) changed each session. The first two correct responses of each sequence postponed shock for a fixed period of time. The third correct response initiated a signalled timeout from avoidance. Incorrect responses did not affect the shock interval or reset the sequence. The effects of manipulating timeout duration on the sequential reacquisition baseline were investigated. All subjects displayed biphasic reacquisition performances similar to those controlled by food. The phases were characterized by an initial increase in accuracy, which reached a stable level during the latter portion of each session. Timeout duration affected rate of sequence completion and shock density, but not percentage of errors. Rate of sequence completion was fastest with intermediate timeouts (15 to 60 sec), and slowest with extreme durations (1 or 120 sec). Shock densities peaked with extreme durations and were at minimum with intermediate timeout values. The percentage of errors was the same across timeout durations. These data extend the generality of sequential reacquisition as a procedure for studying learning, and demonstrate timeout from avoidance to be a controlling variable.
Journal of the experimental analysis of behavior, 1976 · doi:10.1901/jeab.1976.25-303