Human+factors+design.

 =The objectives of Human Factors design can be listed as: =

__**Effectiveness**__ of products or systems.
 * This is linked to how complete, how accurate and how well designed stuff can do it its job.

__**Efficiency**__ of products or systems.
 * This is linked to the effort and speed that is needed to use designed stuff.

__**Engagement**__ with products and systems.
 * This is linked to how pleasant stuff is to use and how much satisfaction can be derived from using stuff.

__**Error tolerance**__ when using products or systems.
 * This is linked to how foolproof and forgiving stuff is.

__**Learnability**__ when using products or systems.
 * This is linked to how predictable and consistent stuff is.

There are a number of considerations we need to take into account when trying to meet the objectives of Human factors design.
**__Visibility. __**
 * <span style="font-family: 'Comic Sans MS', cursive;">Obviously all controls should be visible, but it should also be obvious how they work.

<span style="font-family: 'Comic Sans MS', cursive;">**__Feedback.__**
 * <span style="font-family: 'Comic Sans MS', cursive;">Offers the user some sort of signal to let them know the action they have taken has worked.

<span style="font-family: 'Comic Sans MS', cursive;">**__Mapping.__**
 * <span style="font-family: 'Comic Sans MS', cursive;">Relates the layout of controls and the actions required to use them.


 * <span style="font-family: 'Comic Sans MS', cursive;">__Affordance.__ **
 * <span style="font-family: 'Comic Sans MS', cursive;">This is the ability an object has to let the user know how the object can be worked.

<span style="font-family: 'Comic Sans MS', cursive;">**__Constraints.__** <span style="font-family: 'Comic Sans MS', cursive;">
 * <span style="font-family: 'Comic Sans MS', cursive;">These limit the way an object can be used.

<span style="font-family: 'Comic Sans MS', cursive;">**Could you match the considerations above with the products and systems below? Could you expalin your answers?**
 * [[image:cockpit.jpg width="184" height="157"]] || [[image:Speedometer.jpg width="138" height="144"]] || [[image:cooker_panel.jpg width="166" height="146"]] || [[image:push_doors.jpg width="144" height="147"]] || [[image:3_pin_plug.jpg width="153" height="149"]] ||