128 brilliant leader 3 The 3 Vs ­ As discussed earlier in this chapter, visual and vocal parts of the message have a much greater impact than the words on their own. The more complex the message, the more you need to make sure you are using visual and vocal tools to get your message across. Key points can always be confirmed in writing afterwards. Application The black box effect can occur whenever people communicate but there are some specific areas of leadership communication where managing the black box effect is paramount. These would include coaching, delegating, performance reviews and action planning. It is not difficult to do but is an area that, if over- looked, can be extremely damaging and obstructive.