This OSF repository contains 2000 videos in MP4 format illustrating transitive events, for use as stimuli in psycholinguistic experiments. These stimuli are used in the pre-registered study "Predictors of syntactic productivity in artificial language learning" (https://osf.io/juxbm/). Each video shows two participants, one of which (the "agent") acts in a certain way towards the second one (the "patient"), bringing about a certain effect on the second participant. There are ten kinds of "actions", i.e. what the agent does: - **CLAP**: the agent opens their arms, moves towards the patient, and closes their arms on the patient. - **HEADBUTT**: the agent bends over, moves towards the patient, and comes in contact with them. - **HELICOPTER**: the agent keeps rotating one of their arms while moving towards the patient, until the agent comes in contact with the patient. - **KICK**: the agent moves towards the patient and extends one of their legs, hitting the patient. - **PUMMEL**: the agent stands close to the patient and punches them repeatedly. - **PUNCH**: the agent stands close to the patient, readies one of their arms, and moves their arm towards the patient, hitting them. - **PUSH**: the agent raises both arms and moves them towards the patient, coming in contact with them. - **SPIN**: the agent extends their arms sideways, starts twirling while moving towards the patient, and comes in contact with them. - **BLOW**: the agent bends over with their head directed at the patient, and blows in the patient's direction, moving their head sideways. - **WAVE**: the agent raises one of their arms in the air and waves it towards the patient. The last two actions, BLOW and WAVE, do not cause a significant effect on the patient in any of the videos, but the patient reacts naturally: namely, the patient slowly bends backwards slightly in the case of BLOW, and they nod in the case of WAVE. For the other eight kinds of actions, there are six kinds of possible"effects", i.e. what happens to the patient as a result of the agent's action: - **COLOR**: the patient turns red - **DISAPPEARANCE**: the patient fades away - **FALL**: the patient falls over backwards on the ground - **GOAWAY**: the patient is sent off-frame, moving away out of the scene - **GROW**: the patient becomes bigger - **SHRINK**: the patient becomes smaller The participants in all videos are anthropomorphized animals: **Cat**, **Monkey**, **Pig**, **Rabbit**, **Wolf**. The videos exemplify all possible combinations of actions and effects (except for BLOW and WAVE, see above), enacted by all possible combinations of two different participants. Each transitive event thus defined comes in two versions, in which the positions of the agent and patient on the screen are swapped (agent on the left and patient on the right vs. agent on the right and patient on the left). The content of each video is described by the file name, as follows: EFFECT-action-AgentPatient-Position.mp4 The agent and patient are described by the first three letters of the animal's name: Cat, Mon, Pig, Rab, Wol. "Position" corresponds to the position of the agent on the screen: L (for left) or R (for right). For instance: GOAWAY-push-MonWol-L.mp4 This video shows the monkey on the left, pushing the wolf, resulting in the wolf moving away. When the action is BLOW or WAVE, it takes the place of the EFFECT component, and there is no action component in the file name: BLOW-AgentPatient-Position.mp4, WAVE-AgentPatient-Position.mp4 All videos are available in two versions: one with added cartoon sound effects (in the "actions-withsound" folder), one without sound (in the "actions-nosound") folder. The sounds effects are all from royalty-free sound files found on the web. Finally, videos showing rotating images of the animal participants can be found in the "participants" folder. These videos were created from the Alice visual programming environment (http://www.alice.org/). We used the Alice API and the Alice NetBeans plugin to automatically generate scenes using the 3D assets bundled with the Alice 3 environment, and render them as videos. All rights reserved. Following the Alice 3 End User License Agreement (https://www.alice.org/get-alice/alice-3/), all videos in this repository are for personal, non-commercial, and academic use only.