Why the return trip home feels shorter ?

We have all felt this unique and peculiar phenomena.

A new study has revealed that people reflecting on a roundtrip walk estimated that the return trip took less time than the outward trip.

Many have experienced the "return trip effect," where the return trip seems shorter than the outward trip, even when the trips actually
took the same amount of time.


Ryosuke Ozawa from Kyoto University and colleagues compared a group of 20 men watching two of three pre-recorded walking movies, of either
 an outbound trip and a return trip or two outbound trips.
The participants estimated the length of the two movies both while watching and then again after the two trips.
Only the participants from the group watching an outbound trip and a return trip-a roundtrip-estimated that the second trip took less time than the first trip.

Furthermore, the participants felt the return trip effect only when reflecting on length after the trips.

By comparing the round-trip condition and the non-round-trip condition, the authors suggest that the return trip on a roundtrip may actually make us feel that
time is shorter even without actually being physically part of the trip, and that the return trip effect may not affect the timing mechanism itself, but rather
our feeling of time retrospectively.

Further research is needed to better understand the contribution of the awareness of "return," since the labeling such as "roundtrip" or "return" may be another
factor in inducing the cognitive bias of the return trip effect.

But I don't think it is a research or an explanation of "Why the return trip home feels shorter ? " . For me this was an experiment and it's result is nothing.