Posts Tagged ‘Human Centred Design’

Systems That Encourage You To Think You Can

Sunday, May 17th, 2009

In addition to reading up on Self Determination Theory recently, I’m really grateful to Kim Hiltz for sending me her recent Alf Ulberg Prize winning paper. Picking up where my last post left off by questioning how products, interfaces and systems could be better designed to encourage user competency. Kim’s paper (currently in press) highlights how interfaces or for that matter products and services could be adjusted to decrease the chance of users failing to properly interact with them. The study highlights how telling user’s to ‘test’ a machine decreased the chance of them making common ‘slip errors’. 

A slip error is something like forgetting to position the cursor in the text entry field before beginning to type or a failure by a user to set a product in the correct mode before using it. The common perception is that initialisation errors such as these are not that serious except when they occur in safety critical circumstances, such as forgetting to administer anaesthetic before an operation, or forgetting to engage the landing gear before touching the runway.

They are of interest to my research however, as such minor errors have a big impact on our perceived competence or ‘self-efficacy’. That is our ability to carry out tasks as we had planned them. This in turn has implications for our overall motivation towards a particular task. Particularly in individuals who are not skilled or experienced operators.

Say for example, I really want to be an acclaimed photographer, I went out and bought a top of the range camera and started snapping. In my haste to become the next Wolfgang Tillmans however, I forget to put the camera in the correct mode for the lighting conditions – the results might put paid to my ambitions right there and then. However, the camera manufacturers have afforded me a couple of features to keep my dream alive (auto-focus and these days a screen on which to preview the shots).

This is but one example of where technology and particularly automation can assist individuals in realising ambitions that would previously have taken many years of hard labour and considerably greater expense.

Hiltz’s paper however, also shows that adjusting the role or expectations of the user (without making any changes to the underlying technology or interface) by asking them to ‘test’ the interface, is effectively asking the user to less readily trust the equipment or underlying technology within a system. Put more technically this is asking the user to assume a more analytic or supervisory role – thus empowering them with a greater degree of responsibility within the socio-technical system. In this case by belittling the technology.

This is further demonstrated within a questionnaire conducted with participants in Hiltz’s experiment where those who had been asked to ‘test’ the interface talked of “activating power to the system”. By contrast those in the study who were simply asked to ‘operate’ rather than ‘test’ the system talked about “pressing the power button”. This implies that those in the latter group felt less empowered in relation to the technology. It was this latter group that also made the most errors in operating the system.

intrinsic-extrinsic-locus-of-control1

I think this is of particular significance within the design of services or products that individuals interact with irregularly. As a designer you want those few higher value transactions to be as smooth as possible, but at the same time the user is less likely to successfully achieve these because of lack of persistent experience with the system. Thus a potential solution is to afford cues within the environment or at the consumer touchpoints that help the user assert themselves over the environmental/technological factors with which they are interacting. This boost to user self-confidence might well encourage them to engage in repeated or more regular interactions or refer other people to service.

The camera is an interesting example of a system which due to its high initial investment costs is more likely to encourage individuals to spend time and get appropriate training to master it appropriately. What other tools/cues or design techniques can and are being incorporated in the design process to help users feel more confident and assertive about successful interaction with products or services?

Awareness – Getting Caught Speeding

Thursday, May 7th, 2009

Building on my earlier posts about motivational design: Another well documented example are the signs that give you feedback on your current speed, usually in residential areas if you are exceeding the speed limit.

Radar Speed Sign - CC - Richard Drdal

Radar Speed Sign - CC - Richard Drdal

This is another example of where social proof (via Dan Lockton) of your speed is being fed back to you to motivate a change in behaviour. In this instance awareness of your speed is similar to the previously posted examples of awareness of your weight or awareness of the ambient noise level.

The difference with this example is that above the feedback on your performance is another sign indicating the desired performance – in this case the maximum legal speed limit. These two signs are therefore highlighting both awareness of the speed limit and it’s relevance to your current behaviour. This not only increases the social impact as everyone can see by what extent you are exceeding the speed limit, but also gives you a goal for the extent by which you have to modify your behaviour. 

The added beauty of this example is that of course if you’re behaving like a good law abiding citizen then the lower speed indicating sign is not triggered (it only comes on if you are exceeding the speed limit). Thus, if feedback regarding your current speed is not relevant because you are already within the legal limit, the sign doesn’t trouble you with the extra information (or distraction).

Of course some signs in different parts of the world give you feedback on your speed regardless of whether or not it exceeds the speed limit, which has the effect of another social nudge, but this time a positive one as people can observe that you are within safe limits and therefore a good driver.

What do you think is the best strategy – should the sign only come on if the information it is communicating is relevant or is it better that you receive both positive and negative feedback on your driving performance?

Put another way, in the design of products and services should awareness always be accompanied by information that makes it relevant (as in this example) or is it enough sometimes to simply generate awareness of various environmental or behavioural characteristics without necessarily being explicit about why? (Such as awareness of your weight or awareness of the ambient noise level).

Awareness – AEG Decibel Meter

Tuesday, May 5th, 2009
How loud is 74db?How loud is 74db?

Thanks to Gary Thornton for alerting me to this one via BoingBoing.

Another awareness example from kitchen appliance manufacturer AEG, who get this, are advertising how quiet their kitchen appliances are by alerting people to ambient noise levels in the centre of London. They’ve set up a blog to accompany the campaign as well!

What’s perhaps most interesting about this are some of the comments on the BoingBoing blog entry including the comment from #pinup57 stating that in his opinion “Being ‘aware’ of something is UNDERSTANDING something.”  His general point being that more information or context is required to make the db reading relevant.

As far as viral campaigns go, this one seems to be going well so far (this blog post of course contributing to that success). But the crucial question is will the awareness that AEG are promoting lead to better sales? Is it a relevant concern for many of the people who will see the advert and does the billboard do enough to draw association between the data (the decibel level) and the information contained in the advertisement (the products AEG are selling)?

Perhaps, much like the previous example awareness here is not so much about making something explicitly relevant to those who interact with it, but rather just sowing a seed of awareness that will then encourage people to go on to make their own associations about its relevance

This is what I perceive as the distinction between extrinsic awareness - i.e. – encouraging the user to make a direct association of awareness and relevance (the problem and the solution) and intrinsic awareness - encouraging the user to somewhat less predictably, but perhaps more powerfully draw their own associations of relevance. Many of the comments of BoingBoing allude to the fact that people felt that they needed more context or information in order for this advertisement to be relevant. Put another way they wanted more of an extrinsic association between the db meter and what it was saying about the product it was selling (or for that matter the environment it was positioned in). They didn’t like being left to draw their own associations or have to go away and research sound pressure levels!

I’m no advertising exec. but I can but assume that this latter strategy as I identify it, is better for such mass-media advertising that has to be designed to interact with a wide range of different users…

What do you think? Have you seen any other examples of design for intrinsic awareness like this? An advert or product that highlights a problem and leaves you to make up your own mind whether it’s relevant to you? If you have I’d really like to hear about it so please get in touch either by the comments form below or direct to me by email or twitter.