What term describes the phenomenon where a new graduate's major might drop from 60% perceived value to 10% after five years of experience?

Answer

Time-Value Decay.

The concept of 'Time-Value Decay' suggests that the signaling power of the educational major is front-loaded, decreasing significantly as relevant, measurable professional experience accumulates over time.

What term describes the phenomenon where a new graduate's major might drop from 60% perceived value to 10% after five years of experience?
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