Помогите, пожалуйста, с переводом этого предложения:

Again this is a definition if written on a board someone could replicate without ever having witnessed it firsthand before.

Речь идет о "реакции". Не могу понять, при чем здесь "written on board". Надеюсь на вашу помощь, заранее благодарю.

Response
 The response to a stimulus is what you will be looking at as your starting point clinically. A behavior is a collection of responses whereas a response is a specific instance of behavior.
 The response cycle gives you the parameters to know when to collect data, it highlights for you where to focus your attention.
 Who can give an example of a response cycle (specific example with a clear beginning, middle and end)? Let’s discuss if necessary

Topography and Magnitude
--Most simply stated, what does the response “look” like. _ Again this is a definition if written on a board someone could replicate without ever having witnessed it firsthand before._
--The magnitude of the response will give the information on things like how loud does he scream, how much force is used when hitting/kicking, how hard does he pull hair, strength, intensity, volume (consumed) etc. this will give you more information when prescribing a treatment.

--Most simply stated, what does the response “look” like. _ Again (,) this [=Topography] is a definition (:) if [this response definition is] written on a board (,) someone could replicate [the response] without ever having witnessed it [=response] firsthand before._

итого ваше предложение:
(Еще раз/Таким образом), это определение: если его [определение] просто записать на доске, то любой, никогда до этого не наблюдавший [реакцию] лично, сможет ее воспроизвести.

Благодарю!