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62  Choice of evaluation design.  Making decisions about what data is needed and from whom.  Making decisions about what analysis will use on the data. Types of Performance Questions Performance questions are grouped into three categories: descriptive, normative and cause-and- effect questions. The questions reflect their ability to answer impact. For instance, descriptive questions do not answer impact while cause-and-effect questions do. These questions should be used appropriately based on what they can answer. See Figure 1 below. Ability to explain impact When to use them Descriptive questions During baseline, monitoring and answering requested information on what is the condition of the project Normative questions When benchmarks or standards have been set against which progress assessed (comparison with targets) Cause-and-effect questions When RCTs have been used and aim is to explain cause and effect of observed change Figure 1: Performance questions ability to answer impact and when to use them Descriptive questions – these seek to determine or answer how the situation is “what is”. They describe aspects of the process, a condition, set of views or set of organisational networks (Morra-Imas & Rist, 2009). These questions are often used during baseline studies, monitoring and when answering operational related issues. Morra-Imas & Rist (2009) argue that evaluation questions about policy-making are often descriptive questions. Descriptive questions are a bedrock upon which evaluation is later based on . Table 4: Purpose and Examples of Descriptive Questions Purpose Example Understand or describe project, programme or policy component What role do project implementers have in identifying community assessors? Describe situation How many meals on average do project target groups have per day? Ask W&H questions; who, what, when, how and how many How and how many are benefiting from the feeding programme?