MDPE.12:4.1 - A Balboa-and-brushes comparison

This constructed project example shows the minimum result; its observations are illustrative project data, not a claim about all Balboa dancers. A teacher must decide whether the B articulation is promising enough to retain as the next brush-and-weight-transfer exercise without requiring a larger step. The subject is one pair’s repeated Dance Work, not a population or a causal mechanism.

For this constructed comparison, the same recorded brush pattern supplies the audible timing reference in every trial. The three instructions keep the same small-step phrase and continuous movement but align each audible brush accent with a different event: A — first floor contact; B — arrival of weight on the supporting foot; C — change of travel direction. These labels identify the trial instructions whose enactment is observed below.

The following observations are obtained under one tempo, one pair, the same eight-bar phrase, and a randomized order of the three articulation variants:

• an audio trace gives the audible brush onset for each trial;
• side video gives visible foot placement and step size;
• the receiving partner reports an ambiguous direction in three of six A trials, none of six B trials, and two of six C trials; and
• the performing dancer reports similar effort for A and B but greater effort for C.

The teacher judges B to be the best current exercise candidate because B trials had fewer ambiguity reports than A and C, effort similar to A, and no larger visible step. This is a descriptive within-pair contrast and a practitioner judgement for one phrase. It does not establish that B caused the report difference; random order reduces one possible bias but does not supply a separate causal result.

The next class therefore retains B provisionally and tests it with four unfamiliar partners and two music conditions. The evidence does not support whole-style recognition, social-floor transfer, long-term learning, or the same timing relation for other pairs, tempi, or styles. Reopen the choice if the unfamiliar-partner trials do not preserve the observed contrast or if the audio–weight relation changes with tempo.