The question asks to identify the three key elements proposed by Sanda Erdelez in her 1997 work on 'Information Encountering' (IE) within the domain of information behaviour.

Understanding Information Encountering by Sanda Erdelez

Information Encountering, often referred to as 'serendipitous information seeking', describes the unplanned discovery of useful information. Sanda Erdelez's conceptual framework provided a structured way to study this phenomenon. She identified certain factors that influence how likely and how effectively a user encounters information.

Let's look at the options provided:

1. Characteristics of the information user
2. Characteristics of information-seeking habit
3. Characteristics of information environment
4. Characteristics of encountered information

Erdelez's model suggests that Information Encountering is influenced by the interplay of factors related to the user, the environment they are in, and the characteristics of the information itself that is encountered.

Key Elements of Information Encountering

Based on Sanda Erdelez's foundational work, the three key elements proposed for studying Information Encountering are:

• Characteristics of the information user
• Characteristics of the information environment
• Characteristics of encountered information

Let's break down each of these key elements in the context of Information Encountering:

Characteristics of the Information User

This element focuses on the individual who encounters the information. Factors related to the user that are relevant to Information Encountering include:

• User's prior knowledge and experience.
• User's interests and needs, even if not actively being pursued at the moment of encounter.
• User's personality traits, such as curiosity or openness to new information.
• User's state of mind or attentiveness during the encounter.

A user's readiness and background significantly influence whether potential encountered information is recognised as relevant and useful.

Characteristics of the Information Environment

The environment where the information encounter takes place plays a crucial role. This can include physical environments (like a library, a bookstore, or a museum) or digital environments (like the internet, a database, or social media). Relevant characteristics of the information environment include:

• How information is organised and presented (e.g., clear labelling, logical structure).
• The richness and diversity of information available in the environment.
• The ease of browsing or scanning the information space.
• The presence of features that might highlight potentially relevant information (e.g., recommendations, related items).

A well-organised and rich environment facilitates unintentional discovery.

Characteristics of Encountered Information

This element considers the nature of the information that is stumbled upon. Key characteristics of the information itself relevant to Information Encountering include:

• The relevance of the information to the user's existing or potential needs and interests.
• The format and presentation of the information (e.g., text, image, video, clarity).
• The novelty or surprising nature of the information.
• The perceived credibility or authority of the information source.

The characteristics of the information determine whether it catches the user's attention and is deemed valuable upon encountering.

Option (ii), "Characteristics of information-seeking habit", is related to planned, intentional searching behaviour, which is distinct from the unplanned nature of Information Encountering, although a user's overall information behaviour can influence their propensity for encountering information.

Summary of Key Elements

Based on the analysis of Sanda Erdelez's framework for Information Encountering, the three key elements are indeed the characteristics of the information user, the information environment, and the encountered information.

Therefore, the correct combination of elements is (i), (iii), and (iv).

Revision Table: Information Encountering Concepts

Additional Information on Information Encountering

Sanda Erdelez's work on Information Encountering (IE) was groundbreaking as it provided a systematic way to study what was previously often dismissed as mere "luck" or "serendipity" in information discovery. Her research highlighted that while unplanned, information encounters are not random and can be influenced by design in information systems and environments, as well as by the user's own characteristics.

Subsequent research has expanded on this framework, exploring various contexts for IE, including web browsing, social media, academic research, and everyday life. Understanding IE is important for designing more effective information systems that facilitate both planned searching and unplanned discovery, catering to different modes of information behaviour.

The concept is relevant in various fields, including Information Science, Human-Computer Interaction, and Library Science, as it helps design systems and services that support the full spectrum of how people find and use information.