Diamond pro 2070

All stimuli (colour patches and numerals) were presented using E-Prime 2.0 software and a 32-bit colour and Nvidia graphics card on a 20" Mitsubishi Diamond Pro 2070 set to an 85Hz refresh rate with 1024x768 resolution. The monitor was switched on at least 30 minutes before testing for normal operating temperature to be achieved. Participants sat in darkness measured at less than .01 cd/m 2 (measured with a Minolta LS-100) in the absence of light from the monitor, and used a centrallyplaced chinrest which maintained a constant distance from the screen of approx.
60cm. An enforced ten-minute dark adaptation period with only the light of the monitor (grey screen) preceded the practice trials. A grey background was maintained throughout the experiment. were generated from the same RGB co-ordinates as those used for light and dark blues and greens in Athanasopoulos et al. (2010) and Thierry et al. (2009) . These colours had been selected for their cross-colour equivalence in luminance, their prototypicality as examples of the Greek categories for ble and ghalazio, and for the previous evidence that bilingual Greek-English speakers resident in the UK were sensitive to the distinction between them (Thierry et al., 2009) .

Stimuli were presented on a 20-in. CRT monitor (Mitsubishi Diamond Pro 2070; refresh rate 120 Hz; resolution: 1280 3 1024 pixels). Eye movements were recorded binocularly using the video-based Eyelink 1000 system (SR Research, Osgoode, ON, Canada) with a sampling rate of 1000 Hz. In order to reduce head movements we asked participants to position their head on a chinrest in front of the computer screen (viewing distance: 70 cm). Stimulus presentation and response collection were implemented in MATLAB (MathWorks, Natick, MA) using the Psychophysics Toolbox (Brainard, 1997; Kleiner et al., 2007; Pelli, 1997) and Eyelink Toolbox (Cornelissen, Peters, & Palmer, 2002) .