How did human behavior change in order to allow for large-scale gathering of these cereal crops

Yes, It did.

Explanation:

Before humans use agriculture as our main methods to obtain foods, we were predominantly hunter/gatherer society. We live in small groups and have to constantly move from one place to another based on the climate and food availability.

As the time progress, humans began to learn that we planting/growing our own foods actually more sustainable compared to relying on hunting/gathering.

As we designed our social group based on agricultural practices, humans started to abandon our old behavior and started to develop a new one. We started to learn to live on a larger groups and tried to occupy one place for a long period of time rather than being nomadic.

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