DFFH RULE

1.D- Doherty Threshold :

Users somehow replicate the computer's working speed to navigate the components in the design. Tend to keep the waiting time for users at less than 400 ms. The loading time can be utilized to show visual animations of loading or task-processing phenomena to build trust.

2.F- Fitt's Law :

The target actions or call-to-action buttons must be placed in a space that users can easily reach and must be visually highlighted with large size and contrast.

3.F- Flow :

The user's mental state is directly proportional to energized focus, full involvement, and smooth navigation. Sometimes users may ignore background flaws if the system is visually aesthetic.

4. H- Hick's Law :

The time it takes to make a decision increases with the no.of choices and complexities presented. Rather prefer providing primary options reducing the options that are not aligned with the user's or system's goal.

Reference:

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