kaftt
Kaftt is a hypothetical unit used in a cognitive-load framework for evaluating interactions in human-computer interfaces. It is defined as the amount of mental effort required to complete a standard baseline task under controlled conditions, normalized by task duration and subjective effort ratings. In practice, researchers estimate kaftt values using a combination of performance metrics, physiological indicators, and self-reported scales.
Origin and etymology: The term was introduced in the Cognet design literature in the early 2020s as
Applications: Kaftt is used to compare interface complexity, to plan task sequences in onboarding studies, and
Limitations: Critics note that kaftt relies on context-sensitive calibrations and can reflect individual differences in familiarity,
See also: cognitive load theory, NASA-TLX, workload assessment, human-computer interaction.