If the mobile number of your friend changes and you often continue to dial his former number, it is an example of ___________.

Continuing to dial the old number is negative transfer, where prior learning interferes with and hampers new learning.

Positive transfer is when earlier learning aids new learning, the opposite of the interference here.

Zero transfer is when past learning has no effect at all on new learning.

Bilateral transfer is transfer of a skill from one side of the body to the other, such as learning with one hand aiding the other.

Transfer of learning was studied classically by Thorndike's identical elements theory.

Proactive interference, where old habits disrupt new ones, underlies this negative transfer.