Moral and evaluative reasoning across the life-span.

Area of Science:

• Psychology
• Developmental Psychology
• Moral Development

Background:

• Longitudinal/cross-sectional studies are crucial for understanding developmental trajectories.
• Previous research on moral reasoning, such as Kohlberg's, provides a foundation for current investigations.
• Armon's data offers a unique dataset for analyzing reasoning development over time.

Purpose of the Study:

• To analyze Armon's data on moral and evaluative reasoning using Rasch analysis.
• To determine if Armon's and Kohlberg's measures assess a single dimension of reasoning.
• To examine the progression and rate of development across different reasoning stages and items.

Main Methods:

• Utilized Rasch analysis to evaluate data from a longitudinal/cross-sectional study.
• Analyzed interviews from 42 participants (23 females, 19 males) aged 5 to 86.
• Examined reasoning development across five items over four test times between 1977 and 1989.

Main Results:

• Rasch analysis confirmed that Armon's and Kohlberg's measures tap a single underlying dimension of reasoning.
• Individual stages across five items consistently measure the same levels of reasoning.
• Development progresses at a similar rate across all items, with stage transition appearing step-like.

Conclusions:

• The findings support a unified dimension of reasoning development, aligning with established theories.
• Participants demonstrated a tendency to apply existing reasoning structures rather than advancing to new stages.
• Moral development progresses in distinct, step-like transitions rather than a continuous flow.