When color coding backfires: A guidance reversal effect when learning with realistic visualizations.

Area of Science:

• Cognitive psychology
• Educational technology
• Human-computer interaction

Background:

• Realistic visualizations are common in digital learning but can be cognitively demanding.
• Color coding is often used to simplify visualizations, but its effectiveness varies.
• Previous research suggests color coding may hinder learning with simple visualizations.

Purpose of the Study:

• To investigate the effect of color coding in learning tests on retention and transfer.
• To assess if color coding during learning influences the impact of color coding during testing.
• To examine the role of color cues in detailed visualizations for learning outcomes.

Main Methods:

• Learners used detailed visualizations, either with or without color cues.
• Subsequent learning tests either featured color coding or did not.
• Retention and transfer of knowledge were measured.

Main Results:

• Color coding in tests significantly improved learning outcomes when color cues were also present during learning.
• Learning with color-coded visualizations and testing without color cues resulted in the poorest retention and transfer.
• Color coding in testing visualizations enhanced transfer performance irrespective of color cue presence during learning.

Conclusions:

• The effectiveness of color coding in digital learning depends on its consistency between learning materials and assessments.
• Optimizing learning by removing difficulty may be counterproductive; maintaining some difficulty can be beneficial.
• Designers should consider the interplay of color cues in learning and testing phases for digital educational media.