I would like to know what is the difference between nominal group technique and kano analysis

Kano Model - is a product development theory which categorizes customer requirements with respect to product features into below five segments

 

1. Basic (must be quality) - as the name suggests, these are the basic expectations of a customer. If present, the customers are neutral, but if absent, it would lead to customer dissatisfaction

2. Performance (one dimensional quality) - features that result in satisfaction if present and dissatisfaction if absent. These are the stated needs of the customer

3. Excitement (attractive quality) - features that result in satisfaction if present and neutral if absent. These are the delighters for the customers. These needs are usually unspoken and are the differentiators for competing products

4. Indifferent - features that the customer is indifferent to as their presence or absence neither causes satisfaction nor dissatisfaction to the customer

5. Reverse - features that result in dissatisfaction if present and satisfaction if absent. These are the features that should not be present in the product

Kano model is used to assess the product features on a periodic basis as the customer demands keep on changing. E.g. something that is an 'Exciting' feature today, will eventually become a 'Basic' feature tomorrow

 

Nominal Group Technique (NGT) - is a problem solving tool that is used to generate and evaluate possible solutions. It is called 'Nominal' as it limits the interaction between participants in the initial stages as they are expected to write the possible solutions on a piece of paper. Once all solutions are written, the ideas are collected followed by a discussion on the evaluation of ideas. Usually voting is done to select the best solution. Sometimes multiple rounds of voting may be required.

 

Using the KANO Model, we will get to know the customer requirements with respect to product features. The required features could either be present or absent.

Then,  NGT could be used in following ways

1. If the feature is present: to identify solutions to keep the variations and cost of the feature to minimal

2. If the feature is absent: to identify how the internal processes need to be modified / strengthened or what new processes have to be designed to be able to provide the new features

Thank you for the nice explanation on the difference between Kano Model and NGT,  Could you please let me know whether we can use Kano Model only for the product development?, is it possible to use this model to take decision on the needs of the new machinery required for the manufacturing (as decision tool to collect the stake holder needs, for example production, quality and mfg engineering)?, the similar way can we take NGT also as a decision tool for the above need?, thank you to reply me.

Hi Bheemannadora - you may use Kano model to capture the customer requirements / stakeholder needs (VOC). You may also use it to identify the need for new machinery/tools/processes in case there is a gap in the current product features and customer needs. However, you will also need to use a tool (like QFD, CTQ drill down or NGT) to arrive at specific process / product parameters (what we also call engineering characteristics) that fulfill the customer needs

Thanks for the reply, can i get the best template to define the QFD,CTQ drill down for the engineering characteristics?

You could use the template from the below IEEE link

https://www.ieee.li/tmc/traditionalhoq.xlt