Nu-Way Snaps and Snap Leads: an Important Connection in the History of Behavior Analysis
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Nu-Way Snaps and Snap Leads: an Important Connection in the History of Behavior Analysis Rogelio Escobar & Kennon A. Lattal The Behavior Analyst ISSN 0738-6729 Volume 37 Number 2 BEHAV ANALYST (2014) 37:95-107 DOI 10.1007/s40614-014-0008-z 1 23 Your article is protected by copyright and all rights are held exclusively by Association for Behavior Analysis International. This e-offprint is for personal use only and shall not be self- archived in electronic repositories. If you wish to self-archive your article, please use the accepted manuscript version for posting on your own website. You may further deposit the accepted manuscript version in any repository, provided it is only made publicly available 12 months after official publication or later and provided acknowledgement is given to the original source of publication and a link is inserted to the published article on Springer's website. The link must be accompanied by the following text: "The final publication is available at link.springer.com”. 1 23 Author's personal copy BEHAVANALYST (2014) 37:95–107 DOI 10.1007/s40614-014-0008-z ORIGINAL RESEARCH Nu-Way Snaps and Snap Leads: an Important Connection in the History of Behavior Analysis Rogelio Escobar & Kennon A. Lattal Published online: 8 May 2014 # Association for Behavior Analysis International 2014 Abstract Beginning in the early 1950s, the snap lead Keywords Nu-Way snap . Snap lead . Newey Brothers . became an integral and ubiquitous component of the Snap fastener. Snap connector. Relay rack . programming of electromechanical modules used in Electromechanical modules behavioral experiments. It was composed of a Nu-Way snap connector on either end of a colored electrical wire. Snap leads were used to connect the modules to one Along with the operant conditioning chamber and the another, thereby creating the programs that controlled cumulative recorder, relay racks filled with electrome- contingencies, arranged reinforcers, and recorded be- chanical programming modules are iconic devices in the havior in laboratory experiments. These snap leads pop- history of the experimental analysis of behavior. Many ulated operant conditioning laboratories from their in- photographs of operant conditioning laboratories in the ception until the turn of the twenty-first century. They 1950s and 1960s show these relay racks populated with allowed quick and flexible programming because of the electromechanical modules connected together by ease with which they could be connected, stacked, and spaghetti-like arrays of wires and metal connectors removed. Thus, the snap lead was integral to the re- called “snap leads” (Catania 2002,Figs.4 and 5; search activity that constituted the experimental analysis Goldiamond and Dyrud 1968; Gollub 2002,Figs.2, 4, of behavior for more than five decades. This review and 5). traces the history of the snap lead from the origins of Before the advent of computers for experimental the snap connector in Birmingham, England, in the late control and behavior recording, programming schedules eighteenth century, through the use of snaps connected of reinforcement, presenting stimuli, and creating differ- to wires during the Second World War, to its adoption in ent measures of behavior in the laboratory were accom- operant laboratories, and finally to its demise in the plished by connecting relays and other electromechani- digital age. cal devices together (e.g., Ferster 1953; Ferster and Skinner 1957). Originally, relays and then the modules R. Escobar (*) were simply laid out on a table and soldered together Faculty of Psychology, with lengths of wire. A problem with this arrangement National Autonomous University of Mexico, was its inflexibility: Once a program was hardwired, the Av. Universidad 3004, Col. Copilco-Universidad, Del. Coyoacán, C.P. 04510 México, D.F., México only way to change it was to unsolder the wires and e-mail: [email protected] resolder them into the new configuration (cf. Dinsmoor 1966). This inflexibility was the impetus for searching K. A. Lattal for faster and more flexible ways of arranging and Department of Psychology, West Virginia University, Morgantown, WV 26506, USA changing the programs used to control the contingencies e-mail: [email protected] of reinforcement and punishment. Author's personal copy 96 BEHAVANALYST (2014) 37:95–107 The solution is shown in Fig. 1. It was the snap lead, a played a critical role in enabling the research that be- wire with a Nu-Way snap connector at either end that came the foundation of contemporary behavior analysis. could be “snapped” and stacked onto metal studs or each One reason for this was that using snap leads perfect- other on each programming module (calling the connec- ly matched the empirical-inductive method as Skinner tor a snap may be onomatopoeic because the connector applied it to the study of operant behavior beginning in makes a “snap” sound when it is connected in place). the early 1930s. Skinner, in the Baconian tradition, put The snap lead was constructed by soldering a snap aside theory construction and theory-driven hypothesis connector to either end of a length of wire and covering testing in favor of data collection followed by analysis the connection with a piece of insulation (called heat- and integration. The method was predicated on follow- shrink tubing or shrinkable “spaghetti” tubing) or even ing where the data led (Skinner 1956, p. 223). Because, with electrical tape, to prevent unwanted connections to as we will discuss below, the snap lead allowed rapid other, adjacent snaps (see Dinsmoor 1963). Although changes of conditions, its tactical use more readily different electrical-connection solutions were at hand, complemented the strategic underpinnings of the induc- the snap lead became the “hallmark of operant labora- tive method than did the more cumbersome hardwired tories throughout the country” (Dinsmoor 1990,p.140). programming of experiments that was its predecessor in It is not an overstatement to observe that snap leads operant conditioning laboratories. How the snap and Fig. 1 A snap lead is composed of a wire with Hatheway Manufacturing Company fabricated Nu-Way snap connectors at each end. The snap connectors are engraved with the legend “NU-WAY PATENTED.” Arulerwasaddedforscale Author's personal copy BEHAVANALYST (2014) 37:95–107 97 snap lead came to these laboratories and how it changed advertisement emphasizing the latter springs (and noting the experimental analysis of behavior are the subjects of that Newey Brothers’ hooks and eyes were used in this review. Queen Mary’s 1911 coronation robe). Based on this new design, Newey Brothers manufactured snap fas- teners of different sizes for different purposes. The Newey Family Connection Figure 2b shows a snap fastener for carpets that included a screw-tipped stud. The stud was inserted into the floor The story of the snap lead begins in the eighteenth such that it went through the carpet. The carpet then was century in Birmingham, England, one of the crucibles snapped into place by the round snap fastener. These of the English Industrial Revolution. Among the new latter two items bear a striking similarity to the snap manufacturers attracted to Birmingham’sbustlingand connectors and studs found in operant conditioning profitable environment was James Newey, a “gilt toy” laboratories for good reason. maker (Wrightson 1818) who created the Newey James George Newey was working with electric Company in 1798. “Toys” referred at the time not to equipment in the 1920s, patenting a condenser (UK children’s playthings but to devices like buttons, belt Intellectual Property Office, Patent No. 246,362) and buckles, and hooks. improved devices for the electroplating process used to By the mid-nineteenth century, James George Newey finish hooks and clips (US Patent No. 1,744,792; UK and his son, William Millars Newey (Census Returns of Intellectual Property Office, Patent No. 279,616). Even England and Wales 1861; Provisional Protections though he thus may have been primed for using his 1858), were working on “[i]mprovements in fastenings, company’s snap fasteners for making electrical connec- especially for or applicable to wearing apparel and pur- tions, it is likely that James d’Argaville Clark suggested poses where a spring connexion or adjustment is desir- the idea to him. able” (Provisional Protections 1858, p. 286). It is likely that the company acquired the moniker “Newey Brothers” when William and his younger brother, James George, controlled the company. During the fol- The Connectors of James d’Argaville Clark lowing decades, several companies, including Newey Brothers, popularized the use of snap fasteners for cloth- Clark, a Scottish born (1901) electrical engineer ing. The Neweys, however, did not invent them. (University of London Historical Record 1836–1926), Although devices similar to snap fasteners have in 1924 filed a patent for an electrical connector been used since ancient times, another British button consisting of a snap connector with a stud on one side manufacturer, Benjamin Sanders, invented the mod- and a socket on the other. Two or more connectors could ernsnapfastener(Marcel1994;Upton2002). be stacked together by connecting or “snapping” the During the first decades of the nineteenth century, stud of one connector into the socket of another connec- he developed the snap fastener using a button with tor (UK Intellectual Property Office, Patent No. two shells that were pressed on top of two layers of GB244,136). Drawings for the application for the pat- clothing. The exact year of the invention, however, ent, which was issued in 1925, are shown in the upper is unknown (see Marcel 1994). It was the Newey left section of Fig. 3. Two views of the snap connector company, however, that popularized snap fasteners in are marked “Fig. 1” and “Fig. 2.” A different arrange- the twentieth century, based on their improvement in ment to secure the wire or lead to the connector is shown the fastener’sdesign.