Xenophon en de Pluvinel kan je zelf nalezen:
http://ingeteblick.be/bitweaver/treasury/view.php?content_id=91

Over Xenophon en bitgebruik:

In de Hipparchos besteedt Xenophon een heel hoofdstuk aan het bit, waarbij hij waarschuwt voor hardhandig gebruik,maar ook dingen schrijft als:

"How these desirable results are, in our opinion, to be produced, we will
now endeavour to explain. In the first place, then, you ought to have
at least two bits. One of these should be smooth, with discs of a good
size; the other should have heavy and flat discs (4) studded with sharp
spikes, so that when the horse seizes it and dislikes the roughness he
will drop it; then when the smooth is given him instead, he is delighted
with its smoothness, and whatever he has learnt before upon the rough,
he will perform with greater relish on the smooth. "

en wat verderop:

"if the rider pulls him up with the bit while simultaneously
giving him one of the signals to be off, the horse, galled on the one
hand by the bit, and on the other collecting himself in obedience to the
signal "off," will throw forward his chest and raise his legs aloft with
fiery spirit; though not indeed with suppleness, for the supple play
of the limbs ceases as soon as the horse feels annoyance. But now,
supposing when his fire is thus enkindled (11) you give him the rein,
the effect is instantaneous."

mvg,
Inge

www.ingeteblick.be

Piet schreef op zaterdag 13 juni 2009, 7:10:


Mmmmnounietnieuwnee. 1973, Lewis (ondermeer): conjugate reinforcement: the duration of the stimulus varies directly and immediately with the subject's rate of response.

Piet's stimulus heeft zelf primaire waarde, de ib is enkel een tertiary reinforcer (omdat die over de secundary naar de primary leidt).

mvg,
Inge

www.ingeteblick.be