Disruption of relational processing underlies poor memory for order.

Area of Science:

• Cognitive Psychology
• Human Memory

Background:

• Encoding tasks influence memory recall, with item-specific processing focusing on individual items and relational processing on associations between items.
• Relational processing is hypothesized to enhance memory for the serial order of information.

Purpose of the Study:

• To investigate how different encoding tasks affect memory for serial order.
• To determine the conditions under which encoding tasks disrupt or preserve order memory.

Main Methods:

• Four experiments were conducted to examine memory for order.
• Participants performed various encoding tasks, including semantic, orthographic, and item-generic key press tasks.
• Tasks varied in typicality and required different levels of attention and response.

Main Results:

• Both semantic and orthographic tasks impaired memory for order when focused on individual items.
• Even a simple key press task harmed order memory, indicating item-specific processing is not essential for impairment.
• Impaired order memory resulted primarily from distraction during item processing, not between items.
• Unusual tasks preserved order memory if they encouraged encoding of item-to-item relations.

Conclusions:

• Encoding tasks disrupt order memory when they are attention-grabbing and nonrelational.
• Distraction during item processing is a critical factor in impairing serial order memory.
• Relational processing, regardless of task typicality, supports the memory for serial order.