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Lifestyle Design by Backcasting
Published in Ryuzo Furukawa, Lifestyle and Nature, 2019
The evaluation grid method is based on personal construct theory. It is a method developed by Junichiro Sanui that expanded on the interview-style “repertory grid method” in order to know a person’s original structure of perception [3]. Personal construct theory was a theory devised by the clinical ethicist George Kelly in 1955 [4]. “Construct” includes the concept of adjectival opposition, such as “the window is large/small” or “the room is bright/dark,” and a cause-effect relationship between the components, such as “large window, bright room.” As a whole, these structures of perception are called a “construct system.” The repertory grid method is an interview-based investigative method that presents several elements and has the subject compare them and freely respond to their similarities and differences in order to know the individual’s construct system. The evaluation grid method applies the repertory grid method and extracts only those parts about the construct system that are related to the lifestyles. This is done by having the subject judge which elements are superior or inferior and focusing on the decision criteria. The steps for this method are as follows: Step 1. Create the elementsStep 2. Select the evaluation factorsStep 3. Apply laddering
Interface Analysis Methods
Published in Neville A. Stanton, Paul M. Salmon, Guy H. Walker, Chris Baber, Daniel P. Jenkins, Human Factors Methods, 2018
Neville A. Stanton, Paul M. Salmon, Guy H. Walker, Chris Baber, Daniel P. Jenkins
The repertory grid method is an interview-based method that can be used to analyse participant perceptions or views regarding a set of similar products, systems or devices. Repertory grid analysis can be used either in the early design life cycle in order to provide an insight into how potential users think about the product in question, and to specify product requirements and design preferences, or to evaluate existing product designs in terms of user attitudes. The method was originally developed as a technique for analysing personality and according to Baber (2004a) was originally used to study patient interaction with other people e.g. for examining responses to authority or attachment. Repertory grids have since been employed for a number of different purposes, including for product evaluations of in-car radio players (Stanton and Young, 1999), and microwave ovens (Baber 1996), the evaluation of different text types (Dillon and McKnight, 1990), the evaluation of consumer behaviour (Baber, 1996) and for the evaluation of collaboration (Shuler, 1990). Furthermore, Baber (1996) suggests that the repertory grid method has the potential to be used for a wide range of purposes. The method involves presenting a single participant with a set of similar products or proposed product designs and eliciting constructs and contrasts for these items. Each construct and contrast is then analysed in relation to each product under analysis, and a set of factors for the product group is specified. The output of a repertory grid can either be qualitative or quantitative.
Interface Analysis Methods
Published in Neville A. Stanton, Paul M. Salmon, Laura A. Rafferty, Guy H. Walker, Chris Baber, Daniel P. Jenkins, Human Factors Methods, 2017
Neville A. Stanton, Paul M. Salmon, Laura A. Rafferty, Guy H. Walker, Chris Baber, Daniel P. Jenkins
The repertory grid technique is an interview-based technique that can be used to analyse participant perceptions or views regarding a set of similar things (these could be people, products, systems or devices). The technique was developed by Kelly (1955) to support his theory of personal ‘constructs’. This theory assumes that people seek to develop a view of the world that allows them to combine their experiences and emotions into a set of ‘constructs’. These can then be used to evaluate future experiences in terms of how positively or negatively they relate to a construct. Repertory grids have since been employed for a number of different purposes, including for product evaluations of in-car radio players (Stanton and Young, 1999a) and microwave ovens (Baber, 1996), the evaluation of different text types (Dillon and McKnight, 1990), the evaluation of consumer behaviour (Baber, 1996) and the evaluation of collaboration (Schuler et al., 1990). Repertory grid analysis can be used either in the early design life-cycle in order to provide an insight into how potential users think about the product in question and to specify product requirements and design preferences, or to evaluate existing product designs in terms of user attitudes. The technique involves presenting a single participant with a set of similar products or proposed product designs and eliciting constructs and contrasts for these items. Each construct and contrast is then analysed in relation to each product under analysis, and a set of factors for the product group is specified. The output of a repertory grid can either be qualitative or quantitative.
Constructing and measuring domain-specific emotions for affective design: a descriptive approach to deal with individual differences
Published in Ergonomics, 2020
Mingcai Hu, Fu Guo, Vincent G. Duffy, Zenggen Ren, Peng Yue
The basic construction corollary in PCT suggests that a person anticipates events by construing their replications (Kelly 2003). A construct, then, must serve to infer similar events and serve also to differentiate them from others. Moreover, there are other corollaries shaping the characteristics of a construct. For example, the dichotomy corollary reveals that a person’s construct system is composed of a finite number of dichotomous constructs (Kelly 2003). Following these corollaries, Kelly (1955) developed a technique called Repertory Grid Interview (RGI), which has been the most widely known and widely used aspect of PCT, to uncover a person’s own construct systems. A repertory grid is described by a set of constructs, a set of domain elements, and their relating data. The RGI thus involves defining a set of elements, eliciting a set of constructs that differentiate among these elements, and relating elements to constructs. In a general flow, a subject is provided three elements (i.e. a triad) one time and is asked to divide them into two similar elements (inclusive pole) and one different one (exclusive pole). Next, the subject is required to describe how he/she differentiates the elements, and label both construct-pole. Repetitively, new triads are continuously provided to the subject until no new construct emerges.
Behavioural modification framework to address wastage in household electricity consumption
Published in Ergonomics, 2018
Stephanie K. A. Cheah, Paul H. P. Yeow, Sumesh R. Nair, Felix B. Tan
Repertory Grid (RepGrid) is a matrix with an empty grid form, which the researcher uses to annotate constructs based on participants’ responses (Wright 2006). The constructs are bipolar in nature (e.g. dependent–independent); however, they need not be logically opposite in meaning (e.g. do not waste energy – do not care about whether electricity is wasted instead of do not waste energy – waste energy). Hence, participants are able to distinguish who is deemed to be a responsible household electricity user and who is not (by explaining their family members’ actions) as compared with a survey (i.e. where Likert-scale opinions are suggested in the questionnaires) or focus group (i.e. does not allow participants to further distinguish responsible or irresponsible family members).