Are emergency actions an appropriate part of a captain's briefing in a light aircraft? It is generally considered that giving a captain's briefing when flying passengers in a light aircraft for recreational purposes is a good thing to do. I'm asking about flying people who may not be used to light aircraft, such as friends and family (as opposed to other pilots, who we often fly with).

In general, I give a few pieces of information:


What will happen on the ground
When to avoid talking (i.e., when it looks like I'm listening intently and noting something down, when we're approaching to land)
Where we're going, what will happen during the flight
What to do if they feel unwell


Then there is the bit I'm going to ask about; people are used to hearing about "emergency exits", and evacuation procedures etc. when flying on an airliner, so I usually consider it prudent to supply the same sort of information about a light aircraft emergency:


How to open the doors if jammed by damage
To get out as soon as we come to stop
To move as far away from the aircraft as possible, even if I am unable


However, I'm starting to wonder if this sort of information would be scaring the bejesus out of my inexperienced passengers. In the next couple of years I'd like to fly my kids who are still fairly young. I definitely do not want to make it a scary experience for them when the time comes.

How do other light aircraft pilots approach this conundrum? Be safe, and supply the important information while possibly scaring passengers, or avoid the "nitty gritty" of an emergency knowing that it is a rare occurrence indeed?

It strikes me that I could provide this information if the time comes to make an emergency landing, however knowing my own limitations I know that if that time does come, I will probably be too overwhelmed with aviating to be thinking clearly enough to provide the important information.

What is the "right" amount of emergency briefing?
It sounds like you are covering the safety material you need to from a regulatory and good sense approach. Trying to convey an emergency exit briefing during an emergency is not going to work, you need to give it all at the beginning. If you get an engine fire on startup you need your passengers to be ready. 

I find that people appreciate that you give a briefing as it shows a bit of "professionalism" that re-assures them, rather than scaring them it shows you know what you are doing. I do cover the same material, and I usually do it slightly tongue and cheek in the similar manner as a commercial airline. For example when I talk about emergency exits I point to the doors to the left and right, then say something like "if there is an exit behind you then things really have gone wrong". That's just my personal style, there's no hard fast rules on it. If people decide not to fly with you after your briefing maybe you are going about it wrong though. 

The approach I take with small children is different than that which I take with adults. The first flight in a light airplane is a very novel experience for anyone, with kids I explain what the experience will be like a lot more than adults. An adult will understand what you mean by climb usually, but saying "the airplane will lean back a bit and we will go up" makes more sense to a little kid.