Memory's reflection of learned information value increases across development.

Area of Science:

• Cognitive psychology
• Developmental psychology
• Neuroscience

Background:

• Effective learning requires prioritizing future-useful information.
• Cognitive control systems mature over development, potentially improving strategic encoding.
• Existing value-directed memory studies use explicit cues, unlike real-world scenarios.

Purpose of the Study:

• To investigate if individuals can learn item frequencies and prioritize memory for high-frequency items.
• To determine how this ability develops across age groups.
• To explore the role of environmental statistics in memory prioritization.

Main Methods:

• Two experiments were conducted with participants across different age groups.
• Experiment 1 assessed memory adjustment based on item frequency in the environment.
• Experiment 2 examined associative memory when item frequency was unrelated to reward.

Main Results:

• Individuals from childhood to early adulthood demonstrated an improved ability to dynamically adjust memory based on environmental statistics.
• Increased exposure to high-frequency items did not enhance associative memory when frequency and reward were uncorrelated.
• The capacity to leverage past experience for memory prioritization strengthens with age.

Conclusions:

• The ability to prioritize memory for high-value information develops with age.
• This development is linked to an improved capacity to extract explicit knowledge about environmental structure from experience.
• Findings suggest a developmental trajectory in using environmental statistics for adaptive memory strategies.