The Torrance Test of Creative Thinking (TTCT) Non-verbal, specifically the "Picture construction" sub-test, aims to assess creative capabilities through visual tasks. Understanding which specific elements of creativity are measured is crucial.

Picture Construction Scoring Elements

In the "Picture construction" sub-test, the primary scoring dimensions focus on the qualities of the final product derived from the given shape. The key scored components are:

• Originality: This assesses the uniqueness and uncommonness of the idea or drawing produced. It involves looking beyond the obvious interpretations of the given shape.
• Elaboration: This measures the extent to which the drawing is detailed and developed. It reflects the ability to add extraneous details and build upon the basic idea.

Other Creativity Components

While Fluency (number of ideas) and Flexibility (number of categories/shifts in thinking) are core components measured by the TTCT overall, they are typically not the primary focus or are scored differently in the "Picture construction" task compared to other sub-tests like "Picture completion". This specific task emphasizes the quality (Originality) and detail (Elaboration) of a single constructed image.

Conclusion on Scored Components

Based on the typical scoring of the "Picture construction" sub-test, Originality and Elaboration are the main components assessed. Therefore, the correct components scored are 'a' and 'b'.