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Table 3 Easier and harder items for Norwegian students

From: DIF as a pedagogical tool: analysis of item characteristics in ICILS to understand what students are struggling with

Easier Harder
Aspect 1.1: Knowing about and understanding computer use
Open a link (− 0.23)
Navigate to a text-based URL (− 0.22)
Open a file of a specified file type (− 0.44)
Aspect 1.2: Accessing and evaluating information
Evaluate the reliability of a crowd sourced information website (− 0.46)
Aspect 1.3: Managing information
Modify the sharing settings of a collaborative document (− 0.34)
Aspect 2.1: Transforming information
Adapt information for an audience (− 0.31)
Aspect 2.3: Sharing information
Identify who received an email by carbon copy (− 0.38)
Aspect 2.4: Using information securely and safely
Explain a potential problem if a personal email address is publicly available (− 0.24)
Aspect 1.1: Knowing about and understanding computer use
Save a presentation with a new file name (0.41)
Open a link to a different page of a website (0.35)
Aspect 1.2: Accessing and evaluating information
Find specific information on a website (0.3)
Aspect 2.2: Creating information
Create a balanced layout for text and images in a website page (0.25)
Aspect 2.3: Sharing information
Range of relevant information on a topic included in a poster (0.31)
Aspect 2.4: Using information securely and safely
Differentiate paid search results from organic search results (0.31)
  1. Numbers in parenthesis are the DIF values