A block occurs when an offer is stopped, rejected, negated or ignored. Blocking stops the action. It breaks down the communication and steals the focus from another offer. It grinds the story to a halt. It is the opposite of yielding and usually occurs when a player is afraid of accepting another's ideas. A block creates a different focus or may split the focus.
For example:
Offer: That dog has three legs.
Block: That's not a dog.
or
Block: What dog?
Saying no is not always a block.
Offer: Stick 'em up! (holding fingers as a gun)
Yield: No, don't shoot! (hands up in surrender)
or
Yield: No, don't shoot! The money is in my back pocket!
In this instance player B has agreed to be in danger, and yielded to the offer of the gun and the status of player A.
When players endow offers they give them value – for example size, weight, shape, attitudes, relationships. They endow their environment, weather, and other players. Endowment allows players to imagine, “What if this player were the queen or a hairy monster or my brother, etc., and treat the other player accordingly. Endowment encourages players to express opinions and deepens their commitment to the ideas and other players in the scene.
The focus is the point of concentration shared by players and audience. It is what the players and audience see and hear. It is important that all players serve the focus in the scene at all times.
When players freeze, they stop their movement and hold their position as still as possible.
Gibberish is a language made up of vocal sounds of different pitches, accents and inflections. It is non-sensical in that no such language exists. But when players improvise in gibberish, they believe they understand everything that is said by themselves and other players.
When we improvise, we act spontaneously, without pre-planning the future, using whatever is at hand to invent stories and characters to create a world of make-believe.
An offer provides a beginning via the first action that starts a scene. It may be verbal, non-verbal or both. It needs to be clear, simple and brief. Offers often continue to be made through the scene. To make an offer is to make a positive suggestion, movement, physical shape or expression (silent or spoken) that starts or develops a story or a scene.
There are 5 points to remember about an offer:
When characters form a hierarchy the pecking order becomes clear and status relationships are formed. When the status of characters changes; there is a turning point and an advance in the scene. eg. Cinderella is fitted with the glass slipper.
The subtext is the unspoken meaning that lies underneath the dialogue. It is conveyed through body language, tone of voice and mood.
A task gives players something specific and active to do in a scene, e.g., hanging the washing on the line, making a hat.
A wimp occurs when a player refuses to take their part for developing of a scene. A wimp usually results in:
Offer: Look at that thing!
Wimp: Yeah look at it.
Offer: Look at that!
Wimp: Yes….it's green, hairy, brown and….
Offer: Look at that incredible man-eating dog!
Wimp: Yes but it's not real.
Offer: Look out, that car is going to hit that dog!
Wimp: Yes, it might
Offer: Where do you think that dog came from?
Wimp: I don't know, what do you think?
A Yield is to accept an Offer. Yielding is saying yes to another person's ideas. Yielding enables players to share the scene. Yielding requires listening to an offer and giving an honest reaction. The opposite of yielding is blocking.
Offer: Look, that dog's got three legs
Yield: Yes, and it's has three eyes too
Or
Offer: I feel sick in my stomach.
Yield: Yes…and your face is turning pale too
Block: No you don't
or
Block: You look fine to me
http://www.drama-teaching.com/uploads/1/2/8/3/12838058/basic-improvisation-terms-and-skills.pdf