She was never carried about in arms at all, never walked with when crying or sleepless; she was frequently turned over in her sleep; she was not allowed to balance herself on her feet until a later period than that covered by the experiments.

Thus the conditions of the rise of the right-handed era were made as simple and uniform as possible.
The experiments included, besides reaching for colours, a great many of reaching for other objects, at longer and shorter distances, and in unsymmetrical directions.

I give some details of the results of the experiments in which simple objects were used, extending over a period of four months, from the fifth to the ninth in her life.

The number of experiments at each sitting varied from ten to forty, the position of the child being reversed as to light from windows, position of observation, etc., after half of each series.
No trace of preference for either hand was discernible during this period; indeed, the neutrality was as complete as if it had been arranged beforehand, or had followed the throwing of dice.
I then conceived the idea that possibly a severer distance test might affect the result and show a marked preferential response by one hand over the other.

I accordingly continued to use a neutral stimulus, but placed it from twelve to fifteen inches away from the child.