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Selection of Semantic Pairs of Descriptor Terms for 1 st Survey

Selection of Semantic Pairs of Descriptor Terms for 1 st Survey. January, 2007 NCSU. Step 1. Identifying and sorting descriptor terms based on semantic analysis.

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Selection of Semantic Pairs of Descriptor Terms for 1 st Survey

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  1. Selection of Semantic Pairs of Descriptor Termsfor 1st Survey January, 2007 NCSU

  2. Step 1. Identifying and sorting descriptor terms based on semantic analysis • Overlap: Count of conceptual terms held in common with other descriptors - How many times a selected pair of descriptors loaded on a concept term also related to another pair of descriptors. • Conceptual Breadth: How many times a selected pair of descriptors loaded on any terms in the list of conceptual terminology.

  3. Step 2. Assessing list of descriptors selected by Aptima • Descriptors are primarily sorted by measure of redundancy used in semantic analysis of pairs.

  4. Step 3. Identifying orthogonal pairs of descriptors and related conceptual terminology • List of pairs having no conceptual redundancy with other descriptors: Low / High Workload Orthogonal / Redundant Safe / Unsafe Dynamic / static Aptima’s Selection These pairs are recommended for use in the lab studies as they appear orthogonal in meaning. • List of pairs with limited conceptual redundancy (Overlap = 1): Aptima’s Selection Aptima’s Selection These pairs are also recommended for use in the lab studies, as they have limited redundancy in meaning.

  5. Step 4. Analyzing redundant pairs of descriptors with conceptual breadth • List of pairs with some conceptual redundancy (Overlap = 2): Recommended Aptima’s Selection Not recommended because previously selected pairs (Salient / Not Salient, Similar / Dissimilar) have similar conceptual meaning (i.e., they load on similar conceptual terminology).

  6. Step 4. Analyzing redundant pairs of descriptors (continued) • List of pairs with conceptual redundancy (Overlap = 3): Recommended Aptima’s Selection Not recommended because previously selected pair (Dull / Sharp) has similar conceptual meaning.

  7. Step 4. Analyzing redundant pairs of descriptors (continued) • List of pairs with high conceptual redundancy (Overlap = 4): None recommended because previously selected pairs have similar conceptual meaning.

  8. Step 4. Analyzing redundant pairs of descriptors (continued) • Descriptor pair with highest conceptal redundancy (Overlap = 5): Not recommended because previously selected pairs have similar conceptual meaning.

  9. Step 5. Identification of selected list of semantic pairs of descriptor terms for use in lab studies (any conceptual redundancy is highlighted):

  10. Modification some pairs by feedback from NASA & Aptima • Feedback from NASA • Add “Discernible / Indiscernible” • Add “Empty / Crowded” • Feedback from Aptima • Substitute “Appealing / Unappealing” for “Attractive / Unattractive” • Change “Bland / Colorful” to “Monotonous / Colorful” • Based on the data collection as part of the 1st survey study • Consider "Similar/Dissimilar" and "Static/Dynamic" as potentialalternatives to "Monotonous/variable". (Select among these pairs of terms for use in the 2nd study) • Consider eliminating "Low/High Workload". • Consider eliminating "Low/High Attention". • Consider eliminating "Safe/Unsafe".

  11. Final Semantic Pairs to Clutter Descriptors • Dissimilar | Similar • Dull | Sharp • Empty | Crowded • Indiscernible | Discernible • Low Attention | High Attention • Low Workload | High Workload • Monochromatic | Colorful • Monotonous | Variable • Not Salient | Salient • Redundant | Orthogonal • Sparse | Dense • Static | Dynamic • Ungrouped | Grouped • Unsafe | Safe

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