Twenty20 provides both batsmen and bowlers with a unique challenge in cricket.
The is a huge difference between the shorter form of the game and even one-day cricket.
The more attacking the game the more important the chemistry between what the batsman is looking to do and what the bowler is attempting.
In four-day cricket your best bet might be to keep it really defensive - bowling the same line and length ball over and over again until eventually the batsman loses his wicket through frustration.
My best delivery in four-day cricket may pitch off-stump and hit middle.
If you did that in Twenty20 you would get absolutely pounded out of the ground.
Snape has earned a reputation as a Twenty20 specialist
My best delivery is the opposite of what the batsman is expecting.
From a mental point of view I am always trying to predict what the batsman is looking to do.
If he is trying to play a big shot out of the ground then I can afford something away from my best delivery.
It is more about strategy and stopping what he wants to do rather than technique - although your skills of control are important.
The best players in cricket full-stop are the ones that assess the context of the game really quickly and are able to adapt their skills to that specific context.
As a spinner you are generally coming on in the middle overs - so you are pretty aware where guys have been strong are if they are looking at ones and twos or all out for boundaries.
You make your assessments before the game when you come up with your gameplans - and then again during the game.
Some players might favour the cross-batted approach or go for slog-sweeps, while others might aim to hit you back over your head - that affects the way you are going to bowl.
If you can limit the scoring in Twenty20 you are likely to get wickets.
When you build up dot balls you can see a player's brain working overtime and that is often when they play bad, or higher-risk, shots.
JEREMY SNAPE PROFILE
Played in 10 ODIs for England after making his international debut at the age of 28
Was part of Gloucestershire's treble-winning side in 2000 and the Leicestershire team that won the Twenty20 Cup in 2004 and 2006
Has a degree in Sports Psychology and was part of England's coaching staff at the World Cup
I try to assess the situation but every ball is different and variety is the key.
This "moon-ball" that I bowl is a bit like Russian roulette - if it goes wrong at 40mph it can look pretty stupid because you can get hit out of the park.
But when you get it right it creates so much doubt in a batsman's mind that it can mess up their other shots as well.
It came out of bowling in the nets - I just lobbed it up as a test and people struggled to hit it.
When they did connect it was in more predictable areas, which means you can set a field to it.
Even things like varying your run-up as a bowler are really important - a batsman sets his hitting tempo against the rhythm of your run-up.
If that rhythm changes then it disturbs the batsman so I try and mix in a one or two-pace run-up rather than the usual eight or nine paces.
And then there is regularly altering the field.
If all the variables like flight, length, line and the field placings change regularly then a batsman has to be right on their game.
When they are also having to run quick singles and are out of breath then they struggle to take in all of the information and make the correct decisions.
The more efficient we can make our thinking under pressure the more successful we will be.
Generally the players that have their mental game sorted are the ones that progress to the highest level in Twenty20.
Jeremy Snape was talking to Andrew McKenzie