Indicate in your answer book whether each statement is TRUE or FALSE. Each question carries ONE (1) mark. Answer all questions.

Question 1-1 One of the three main goals of human factors is to increase satisfaction. Question 1-2 Improving the lighting where an inspection task a carried out is an example of environment design. Question 1-3 A heuristic evaluation and usability testing are both carried out with actual users. Question 1-4 Sans serif fonts such as Arial should be used for text that is to be read from a computer screen. Question 1-5 The depth cue where parallel lines converge towards distant points is called linear perspective. Question 1-6 An auditory alarm instead of visual alarm should be used when the message is complex and long.

Question 1-7 Salience is a factor that drives selective attention based on bottom-up processing. Question 1-8 The upper limit or capacity of long-term memory is 7 + 2 units of information. Question 1-9 There is better retrieval of information from long-term memory if it has strong association with other items. Question 1-10 Operators should rely on knowledge in the head for infrequent or safety-critical tasks. Question 1-11 Cue primacy happens when earlier cues receive greater importance and people stick to hypotheses based on them. Question 1-12 Redundancy gain is a perceptual principle of display design. Question 1-13 Feedback of any action carried out by an operator should be provided after a delay. Question 1-14 85th percentile seated height means 85 percent of that population have a shorter seated height.

Question 1-15 The NIOSH lifting equation suggests that loads should not be lifted close to the body.

Question 1-16 In mental workload assessment, the secondary task method measures reserve capacity left over after performing the primary task. Question 1-17 A lapse is an error of commission, while a slip is an error of omission. Question 1-18 During the stage of automaticity, an operators performance requires maximum attentional resources. Question 1-19 The usability criterion where a high level of productivity can be achieved by the user after having learnt the system is called efficiency. Question 1-20 Match between system and the real world heuristic states that the system should speak the users language and follow real world conventions.