The program consisted of 12 one-hour intervention sessions. The sessions were biweekly with a total duration of 6 weeks. The modern board and card games used in the program were Bee Alert (Knizia, 2012), Monster Match (Gruhl & Weir, 2018), Kaleidos Junior (Albertarelli, 1997), Sherlock Express (Kermarrec, 2019), Alles Kanone! (Knizia, 2007), Halli Galli (Shafir, 1990), Bananazul (Warsch, 2019), Blurble (Bernard, 2013), La Morada Maldita (Ortiz, 2020), Dice Academy (Gobert, 2019) and Streams (Itsubaki, 2011). Play sessions will be held in subgroups of 3-5 children within the class group. In each session, each subgroup will play two games. The games used in the program have an average duration of approximately 20-30 minutes (filler games). All subgroups will play all games in the program the same number of times with the same rules. The game program will be the same in all participating centers to guarantee the homogeneity of its implementation.

Wait-list. They will do the usual classes without modern board games. At the end of the post-intervention evaluation, the Conectar Jugando game program will be implemented under the same conditions as the experimental group.

Modern Board Games Intervention in Elementary Classrooms

Change in visuospatial updating from baseline to post intervention. It consists of 9 trials of increasing difficulty in which colored faces move across the screen and it is necessary to remember the last position of each one.

Change in inhibition from baseline to post intervention. It is an adaptation of the classic Flanker Task in which fish must be fed by pressing the key that indicates the direction of the central fish. The inhibition measure is obtained by subtracting the reaction time of the pure block of congruent tests (5 fish going in the same direction) from the standard block that includes congruent and incongruent tests (the 4 fish that accompany the central fish can go in the same direction or the opposite).

Change in shifting from baseline to post intervention. To obtain this measure, a mixed block is included in the fish flanker task in which trials of yellow fish and trials of red fish appear. When the fish are red, the central fish should be fed. When the fish are yellow, the fish from the sides should be fed. For both conditions, congruent and incongruent tests are presented. The subtraction of the reaction time from the standard block (only congruent and incongruent reds) to the mixed block (reds and yellows) gives rise to the shifting measure.

Change in academic competences from baseline to post intervention. Screening test that assesses Reading Fluency, Mathematical Fluency and Calculus in three timed written tasks.

Change in behavioral executive functions from baseline to post intervention

It is a reasoning test in which series and matrices are presented that the child must complete with the available options so that the set makes sense. This measure will be used as a control variable.