Choose a game to train your cognitive abilities. Each game targets a specific brain domain.
Flip cards and find matching pairs. Tests visual memory and spatial recall by challenging you to remember card positions.
How it works: Flip cards to find matching pairs
Watch a sequence of colors light up, then repeat the pattern. Builds working memory and sequential attention.
How it works: Watch colors light up, then repeat
Study a list of words, then recall as many as you can. Strengthens verbal memory and encoding ability.
How it works: Study words, then type what you remember
React as fast as you can when the circle turns green. Measures processing speed and visual reflexes.
How it works: Click when the circle turns green
Connect numbers and letters in alternating order as fast as you can. Exercises executive function and cognitive flexibility.
How it works: Connect numbers and letters in order
Name the color of the text, not the word itself. Tests cognitive flexibility, attention, and language processing.
How it works: Name the color, not the word
Sort numbers from smallest to largest as fast as you can. Tests processing speed and numerical reasoning.
How it works: Tap numbers smallest to largest
Read a short story and answer detailed questions about it. Strengthens memory encoding and verbal comprehension.
How it works: Read a story, then answer questions
Remember which position was shown N steps ago. The gold standard of working memory training used in hundreds of neuroscience studies.
How it works: Match the position from N steps ago
Find the unique target among distractors. Tests selective attention and visual scanning based on Treisman's feature integration theory.
How it works: Find the unique target among distractors
Identify the center arrow while ignoring distracting flankers. Measures selective attention and interference control.
How it works: Identify the center arrow, ignore flankers
Plan ahead to move all discs to the target peg. A classic measure of executive planning and problem-solving from neuropsychology.
How it works: Move all discs to the target peg
Generate as many words as possible within a category or starting with a specific letter. Tests language retrieval and executive control.
How it works: Name words in a category or starting letter
Identify the missing piece in a pattern matrix. Based on Raven's Progressive Matrices, a gold-standard measure of abstract reasoning and fluid intelligence.
How it works: Find the missing piece in the pattern
Quickly match symbols to their corresponding digits using a reference key. Based on the Symbol Digit Modalities Test (SDMT), a sensitive measure of processing speed.
How it works: Match symbols to digits using the key
Respond quickly to go signals, but withhold responses to no-go signals. Tests response inhibition and impulse control, a core executive function.
How it works: Respond to go signals, withhold for no-go
Perform two tasks simultaneously: identify target shapes while tracking colored numbers. Based on dual-task paradigms used to measure attentional capacity and multitasking ability.
How it works: Track shapes and count numbers at once
Find the word most closely related to the target. Tests semantic memory, language processing, and the strength of conceptual connections in your mental lexicon.
How it works: Pick the word most related to the target
Watch cells light up on a grid, then reproduce the sequence. Based on the Corsi Block-Tapping Test, a gold-standard measure of visuospatial working memory span.
How it works: Watch cells light up, then tap them in order
Alternate between classifying stimuli by color, shape, or number as the rule switches unpredictably. Measures cognitive flexibility and the cost of switching between mental sets.
How it works: Classify by color, shape, or number as the rule changes
Quickly judge which of two numbers is larger. Tests processing speed and numerical cognition based on the numerical distance effect (Moyer & Landauer, 1967).
How it works: Quickly judge which number is larger
Read passages as quickly as you can while retaining key details, then answer comprehension questions. Tests reading speed, verbal comprehension, and information retention.
How it works: Read a passage, then answer comprehension questions
Find sets of 3 cards where each property is all the same or all different. Based on the card game SET, tests abstract reasoning, pattern recognition, and visual processing speed.
How it works: Find 3 cards where each property is all same or all different
Recall sequences of colors that grow progressively longer. Based on digit span and sequence recall paradigms from clinical neuropsychology, testing working memory capacity and sequential processing.
How it works: Watch buttons light up, then repeat the sequence
Study a set of faces paired with names, then recall each person's name from memory. Based on face-name associative memory paradigms used in clinical neuropsychology to assess social memory.
How it works: Study faces with names, then recall each name
Track highlighted targets among identical moving distractors. Based on the Multiple Object Tracking (MOT) paradigm by Pylyshyn & Storm (1988), a benchmark measure of sustained visual attention and attentional capacity.
How it works: Track highlighted targets among moving distractors
Identify the missing piece that completes a visual grid pattern. Based on Matrix Completion paradigms from cognitive assessment, testing processing speed and abstract pattern recognition under time pressure.
How it works: Find the missing piece that completes the visual pattern
Unscramble letters to find the hidden word. Based on anagram tasks from neuropsychological assessment, testing lexical access speed, verbal fluency, and mental flexibility.
How it works: Unscramble letters to discover the hidden word
Read premises and draw correct logical conclusions. Based on syllogistic and deductive reasoning paradigms from cognitive psychology, testing analytical thinking and abstract reasoning.
How it works: Read premises and draw the correct logical conclusion
Memorize a grid of filled cells, then reproduce the pattern from memory. Based on the Visual Pattern Test (Della Sala et al., 1999), a validated measure of visuospatial short-term memory.
How it works: Memorize filled cells on a grid, then reproduce the pattern
Sort cards by a hidden rule — color, shape, or number — that changes without warning. A digital variant of the Wisconsin Card Sorting Test (Berg, 1948), the gold standard for measuring set-shifting and mental flexibility.
How it works: Sort cards by a hidden rule that changes without warning
Find the shortest path connecting all waypoints on a map. Based on the Traveling Salesman Problem paradigm, testing spatial planning, optimization, and executive function.
How it works: Find the shortest path connecting all waypoints on a map
Identify which shape matches the reference — only rotated, never flipped. Based on the classic Shepard & Metzler (1971) paradigm, the gold standard for measuring visual-spatial working memory and mental transformation.
Solve arithmetic problems as fast as possible. Based on number fluency paradigms from neuropsychological assessment, this game measures numerical processing speed — a sensitive indicator of cognitive aging.
Watch blocks light up in sequence and tap them in the same order. Based on the classic Corsi (1972) visuospatial working memory test, the gold standard for measuring spatial memory span.
Sort cards by a hidden rule — color, shape, or count — that changes without warning. Based on the Wisconsin Card Sorting Test, the definitive measure of cognitive flexibility and prefrontal function.
Letters flash on screen — respond only to the target X. Based on the Continuous Performance Test (CPT), the clinical standard for measuring vigilance, sustained attention, and impulse control.
Quickly identify the synonym of each word from four choices. Based on the Peabody Picture Vocabulary Test (PPVT-4) and Mill Hill Vocabulary Scale, tests crystallized vocabulary, semantic processing speed, and lexical access.
Choose the word that best completes each sentence. Based on the Reading Span Task and Cloze Test from psycholinguistics, tests semantic comprehension, contextual language processing, and working memory for language.
Track two streams simultaneously: remember which grid position AND which letter was shown N steps ago. The most demanding working memory training paradigm in cognitive neuroscience.
Two arrays flash in sequence — find the item that changed color. Based on the change blindness paradigm, tests visual working memory capacity and attentional focus.
Identify the pattern in a sequence and find the missing number. Based on number series reasoning from intelligence tests, measures analytical thinking and pattern recognition.
Decide as fast as possible: is the letter string a real word or not? Based on the classic lexical decision paradigm, measures word recognition speed and mental lexicon access.
Complete the analogy: A is to B as C is to ___. Based on the classic analogical reasoning paradigm, tests relational thinking, fluid reasoning, and semantic knowledge.
Learn word pairs, then recall the second word when shown the first. Based on the Paired Associates Learning test from neuropsychology, measures associative memory and new learning ability.
Watch digits flash one by one, then recall them in order — forward or backward. Based on the WAIS-IV Digit Span subtest, the gold-standard measure of verbal working memory capacity.
Rapidly classify words by semantic category — is it alive? edible? abstract? Based on semantic priming and categorization paradigms, measures the speed and accuracy of conceptual knowledge access.
Click shapes as they appear — but if a red X flashes over them, stop yourself! Based on the Stop Signal paradigm by Logan & Cowan, the definitive measure of inhibitory control and response cancellation.
A grid of letters flashes briefly — remember which ones were highlighted. Based on Sperling's iconic memory paradigm, tests visual short-term memory capacity and the limits of attentional capture.
Classify words as you go, but remember to press a special button when a color word appears. Based on Einstein & McDaniel's event-based prospective memory paradigm — the ability to remember future intentions.
Spot two digits hidden in a rapid stream of letters. Based on the classic attentional blink paradigm (Raymond, Shapiro & Arnell, 1992) — attention literally blinks after detecting the first target, missing the second.
Memorize a set of letters, then decide if a probe was in the set. Based on Sternberg's (1966) serial memory scanning paradigm — a foundational measure of working memory speed and capacity.
React to a star on the cued side. Based on Posner's (1980) landmark spatial attention paradigm — shows how directional cues shift covert attention and speed up (or slow down) target detection.
Remember the color of each shape, then identify the correct color when probed. Tests visual working memory's ability to bind features together — a key limit of short-term visual storage (Wheeler & Treisman, 2002).
Decide whether two words rhyme — but watch out for spelling traps! Based on Bradley & Bryant's (1983) phonological awareness research. Measures access to the sound structure of language.
Count the circles in each display, then recall all the totals in order. The classic counting span task (Case et al., 1982) — a dual-task measure of working memory capacity that predicts academic achievement.
Watch a sequence of words, then decide which of two probes appeared earlier. Based on Milner's (1974) research on temporal ordering — tests the episodic memory system's ability to code the sequence of events.
Match digits to their symbols as fast as you can within 90 seconds. The WAIS Processing Speed index subtest — one of the most sensitive measures of overall cognitive processing speed.
Watch cells light up on a grid and tap them in order. Tests visuospatial working memory span — the forward analog of the Corsi Block task measuring how many spatial locations you can hold in mind.
Read sentences, judge True or False, and remember the last word of each. The classic Daneman & Carpenter (1980) complex span task — the gold standard measure of verbal working memory capacity.
Read two premises and choose the logically valid conclusion. Based on categorical syllogism research — tests formal deductive reasoning and executive function.
Name colors and shapes as fast as you can. Based on the Rapid Automatized Naming task (Denckla & Rudel, 1974) — a classic measure of processing speed in the language domain linking visual perception to verbal labeling.
Choose from four card decks to maximize earnings. Discover which decks are profitable by learning from wins and losses. Based on Bechara et al. (1994) — the landmark somatic marker test of decision-making and executive function.
Watch a mixed sequence of letters and numbers, then rearrange them: numbers in ascending order, letters in alphabetical order. The WAIS Working Memory Index subtest — measures mental manipulation and working memory capacity.
Four words appear — three share a hidden category, one does not. Identify the intruder. Based on concept formation research (Goldstein, 1948; Delis et al., 2001) — tests abstract categorization and conceptual flexibility.
Name the ink color of emotionally charged words while ignoring their meaning. Measures attentional bias and cognitive control over salient emotional content. Based on Williams, Mathews & MacLeod (1996).
Rearrange scrambled letters to reveal a hidden word. Tap letters in the correct order to build the solution. Tests lexical access, orthographic processing, and mental flexibility. Based on Baron (1978).
Read a list of unrelated words, then recall them in exact order. Measures the phonological loop capacity of short-term memory. Based on Baddeley, Thomson & Buchanan (1975) word-length effect paradigm.
See an arithmetic equation and decide: correct or incorrect — as fast as possible. Tests calculation fluency and numerical processing speed. Based on the Numerical Operations subtest (Wechsler, 2001) and Campbell & Fugelsang (2001).
Press Stop when you think a target number of seconds has passed — no clock visible. Tests internal timekeeping, temporal processing, and metacognitive awareness. Based on Zakay & Block (1997) interval timing research.
See an emoji object and choose the correct name from four options as quickly as possible. Exercises visual object recognition, lexical retrieval, and semantic access. Based on the Boston Naming Test (Kaplan, Goodglass & Weintraub, 1983).
Study words presented in colored boxes, then recall which color each word appeared in. Tests source monitoring, contextual memory binding, and episodic recollection. Based on Johnson, Hashtroudi & Lindsay (1993) source monitoring framework.
A brief flash of dots appears — estimate how many there were without counting. Trains the Approximate Number System (ANS), a core building block of mathematical intuition. Based on Halberda & Feigenson (2008).
Study a brief display of colored shapes, then decide if a probed color+shape combination was actually present. Tests feature binding in visual working memory. Based on Treisman & Gelade (1980) and Wheeler & Treisman (2002).
Track a running total through a sequence of arithmetic operations presented one step at a time — no writing allowed. Tests working memory updating and mental calculation. Based on DeStefano & LeFevre (2004) and Fürst & Hitch (2000).
Study a list of words, then identify each studied word from its first three letters. Tests episodic memory retrieval cued by orthographic primes. Based on Graf & Mandler (1984) and Tulving & Schacter (1990).
Study a list of associated words, then identify which were actually on the list — including a closely related decoy. Tests episodic memory fidelity using the classic DRM paradigm. Based on Roediger & McDermott (1995).
Watch a sequence of dots flash in a timed rhythmic pattern, then identify the matching pattern. Tests temporal attention and beat-based timing. Based on Jones & Boltz (1989) Dynamic Attending Theory.
Spot the single symbol that differs from all others in a grid — as fast as possible. Tests feature detection and visual processing speed. Based on Treisman & Gelade (1980) Feature Integration Theory.
A word flashes on screen — tap its correct semantic category before the timer runs out. Tests rapid lexical access and semantic categorization. Based on Collins & Quillian (1969) semantic network model.
Decide whether each sentence is grammatically correct or contains an error — working against the clock. Tests language comprehension and syntactic processing speed. Based on Friederici (2002) language network research.
Watch words from several categories stream past and remember the last word from each category. Tests executive working memory updating across multiple streams. Based on Yntema (1963) multi-attribute memory task.
Decide which of two numbers is larger as fast as possible. Tests the number distance effect and numerical processing speed. Based on Moyer & Landauer (1967) numerical cognition research.
Solve transitive reasoning puzzles by working out logical relationships between people or objects. Tests abstract reasoning and working memory capacity.
Watch a rapid stream of words and recall the last few presented. Tests continuous memory updating and working memory capacity. Based on Pollack et al. (1959) running span paradigm.
Respond to a color signal while ignoring its screen location. Tests inhibitory control and stimulus-response compatibility. Based on Simon & Rudell (1967) spatial compatibility research.
Study where emoji objects appear on a grid, then recall their positions from memory. Tests spatial episodic memory and place learning. Based on Smith & Milner (1981) object location research.
Identify the dominant direction of motion in a field of moving arrows. Tests visual integration and perceptual decision-making speed. Based on Watamaniuk & Sekuler (1992) direction averaging research.
Watch a rapid stream of letters and press a button only when the rare target appears. Tests sustained vigilance and selective attention via the classic P300 oddball paradigm. Based on Sutton et al. (1965) and Polich (2007).
Dots flash briefly on screen — identify the exact count instantly. Small quantities (1–4) are processed automatically without counting; this effortless perception is subitizing. Based on Kaufman et al. (1949) and Trick & Pylyshyn (1994).
Study pairs of abstract shapes and colors, then recall the matching color for each shape. Tests visual episodic memory and associative binding. Based on the WMS-IV Visual Paired Associates subtest (Wechsler, 2009).
Two concepts appear — select what they most fundamentally have in common. Tests verbal abstract reasoning and concept formation. Based on the WAIS-IV Similarities subtest (Wechsler, 2008) and Goldstein (1948) abstract attitude research.
A letter is shown and a grid of words appears. Select every word that starts with the target letter before time runs out. Tests phonemic verbal fluency and lexical access speed. Based on the COWAT phonemic variant (Benton & Hamsher, 1976).
A number flashes on screen — press ODD or EVEN as fast as possible. Tests automatic numerical categorization and processing speed. Based on Dehaene et al. (1993) SNARC effect and parity judgment research.
A complex overlapping figure is shown — identify which simple shape is hidden within it. Tests field independence and perceptual disembedding: the ability to extract a target form from a distracting visual field. Based on Witkin et al. (1971) Embedded Figures Test.
A colored circle appears — press the correct key as fast as possible. Tests choice reaction time and processing speed under increasing numbers of stimulus-response alternatives. Based on Hick's Law (1952) and Merkel's (1885) foundational choice RT research.
A number is shown — click where it belongs on a number line. Tests the precision of the mental number line and how accurately you represent numerical magnitude spatially. Based on Siegler & Opfer (2003) research on number line estimation development.
Two words appear side by side — decide whether they sound exactly the same when spoken aloud. Tests phonological awareness, auditory lexical discrimination, and the mental lexicon's phonological representations. Based on Liberman et al. (1974) and Brady & Shankweiler (1991).
Two words appear side by side — pick the one used more often in everyday English. Tests implicit lexical frequency knowledge, the mental lexicon, and sensitivity to Zipfian word distributions. Based on Kucera & Francis (1967) norms and Brysbaert & New (2009) SUBTLEX-US.
Find the target shape in a grid of distractors as fast as possible. Feature searches produce a visual "pop-out"; conjunction searches require serial attention. Based on Treisman & Gelade (1980) Feature Integration Theory.
A grid of words appears — click all items belonging to the given category before time runs out. Tests semantic memory organisation and attentional guidance by category. Based on Collins & Quillian (1969) semantic network theory.
Watch a cloud of moving dots and decide: are they drifting left or right? Only a fraction move coherently — the rest are noise. Trains perceptual decision-making and motion detection. Based on the random dot kinematogram (Newsome & Paré, 1988).
A piece of paper is folded and holes are punched through it. When fully unfolded, where are the holes? Choose the correct pattern from four options. Based on the Paper Folding Test (Shepard & Feng, 1972).
A prime word flashes briefly, then a target appears. Decide as fast as possible whether the target is a real word or a non-word. Related primes speed recognition — the priming effect reveals your semantic memory network. Based on Meyer & Schvaneveldt (1971).
Words flash on screen — some appear more than others. Afterward, estimate how many times each word appeared. Tests incidental frequency monitoring, an automatic memory process. Based on Hasher & Zacks (1984).
Two vertical lines flash briefly, then a masking pattern appears. Identify which line was longer using only that initial glimpse. Measures the minimum exposure duration for accurate visual discrimination. Based on Vickers (1970) and Brand & Deary (1982).
A shape appears — predict which outcome will follow (A or B). Each shape has a hidden probability of each outcome; learn the pattern through trial-by-trial feedback. Based on the Rescorla–Wagner model and probabilistic category learning.
Two digits appear at different physical sizes. Judge which is numerically larger while ignoring physical size. Congruent trials (bigger number = bigger size) are easier than incongruent ones — revealing the size-congruity effect. Based on Besner & Coltheart (1979).
Watch colored buttons light up in sequence, then reproduce the order from memory. The sequence grows longer with each success, testing your visual working memory span. Based on classic working memory span paradigms.
A large letter is composed of many small letters. Focus on the BIG letter or the SMALL letters as cued, then judge whether it matches a target. Reveals global precedence in visual perception. Based on Navon (1977).
A word appears — decide quickly if it is a real English word or a made-up non-word built from valid prefixes and suffixes. Tests morphological awareness and the speed of lexical access. Based on Tyler et al. (2000).
Complete the pattern: A is to B as C is to ?. Shapes transform by rules (color, size, fill). Identify the transformation and pick the correct answer from four choices. Tests fluid intelligence and analogical reasoning. Based on Raven (1938).
A target arrow appears — press its direction. On some trials a brief warning flash comes first, speeding your response. The difference between warned and unwarned reaction times measures your alerting attention network. Based on Posner et al. (1987).
A number appears as a word (forty-seven) or a digit (47) — quickly select the matching form from four choices. Tests the speed of your numerical transcoding system, mapping between written digit and spoken/written word forms. Based on McCloskey (1992).
Four boxes light up one at a time — click the highlighted box as fast as you can. The boxes follow a hidden repeating pattern. Your reaction times speed up as you implicitly learn it, then slow in random blocks. Tests implicit sequence learning and procedural memory. Based on Nissen & Bullemer (1987).
Study a list of words presented one at a time, then reconstruct their exact original order by clicking words from a shuffled pool. Tests serial recall and the serial position effect (Murdock, 1962).
A letter appears in the periphery of your vision. Flanking letters crowd around it, making identification harder. Identify the target letter as fast as possible. Based on Bouma (1970) and Whitney & Levi (2011).
A square paper is folded once or twice and holes are punched through the layers. Which dot pattern appears when the paper is fully unfolded? Tests spatial visualization and mental transformation ability. Based on Shepard & Feng (1972).
Remember sequences of similar-sounding words (cat, bat, hat) versus dissimilar words (dog, cup, key). Rhyming words are harder to recall in order — revealing the capacity limits of your phonological loop. Based on Baddeley, Thomson & Buchanan (1975).
Two letters appear side by side. Decide as quickly as possible if they share the same name regardless of case — "A" and "a" are the same name, "A" and "B" are not. Based on Posner & Mitchell (1967).
A sentence flashes on screen — judge True or False as fast as you can. Negative sentences slow response time, revealing how the mind constructs and verifies propositional meaning. Based on Clark & Chase (1972).
Monitor two simultaneous streams: a number stream on the left and a letter stream on the right. Press the corresponding button each time your target appears. Based on Pashler (1994) dual-task interference paradigms measuring divided attention capacity.
Click each colored square exactly once. After every selection the grid reshuffles — you must internally track which colors you have already chosen without any external cues. Based on Petrides & Milner (1982), this tests strategic self-monitoring and frontal working memory.
Sort cards by color or shape — then switch rules on cue! Measures cognitive flexibility and the cost of rule switching. Based on Zelazo's (2006) Dimensional Change Card Sort (DCCS) task.
Learn A–B and B–C word pairs, then infer the A–C link never directly shown. Requires hippocampal memory integration across overlapping associations. Based on Bunsey & Eichenbaum (1996).
Study two word lists in sequence, then recall the second list. Prior learning (List A) competes with new memories (List B), revealing how interference degrades recall. Based on Underwood (1957).
Learn a short and long anchor duration, then judge whether probe intervals are closer to "Short" or "Long". Measures interval timing precision. Based on Meck & Church (1983).
Learn which stimulus earns a reward, then adapt when the contingency silently reverses. Tests orbitofrontal flexibility. Based on Cools et al. (2002).
Distinguish between exact repeats and similar-but-different lures. Hippocampal pattern separation keeps similar memories distinct. Based on Bakker et al. (2008).
Find the target diamond among circles and identify the line inside it. Salient color distractors automatically capture attention, slowing responses. Based on Theeuwes (1992).
Study a word list one item at a time, then recall as many as possible. Reveals primacy (beginning) and recency (end) advantages in memory. Based on Murdock (1962).
Find the target letter T in a grid of distractors. Repeated spatial layouts speed up search implicitly — evidence that memory guides attention without awareness. Based on Chun & Jiang (1998).
Study words with Remember or Forget cues. The brain actively suppresses cued-to-forget items, leaving more capacity for what matters. Based on Bjork (1970).
Answer questions about words at different depths — visual, phonological, or semantic. Deeper processing produces dramatically stronger memory. Based on Craik & Lockhart (1972).
Identify the target letter among circle distractors under low and high perceptual load. High load protects against distraction; low load lets distractors interfere. Based on Lavie (1995).
Study word pairs, predict which ones you'll remember, then prove it. Well-calibrated people accurately know what they know. Based on Nelson & Narens (1990).
Watch a stream of shape pairs passively. Your brain automatically tracks which shapes co-occur, revealing implicit pattern learning even without conscious effort. Based on Fiser & Aslin (2001).
Scan a grid of digits and click every instance of the target digit as fast as you can. A classic neuropsychological speed-and-accuracy test from Diller et al. (1974).
Respond only when the letter X follows the cue A in a rapid stream. Tests proactive cognitive control — holding context to guide future action. Based on Braver et al. (2007).
Two versions of an image alternate with a blank interval between them — find what changed. The blank suppresses motion signals, forcing you to rely on memory. Rensink et al. (1997).
Study a set of low-frequency words and their definitions, then recall the correct meaning from choices after a brief delay. Measures intentional word learning and retention. Nation (2001).
Study a grid showing objects at specific locations. When the map disappears, answer location queries from memory. Tests allocentric spatial memory. O'Keefe & Nadel (1978).
Watch a rhythm pattern play out, then reproduce it by tapping at the right moments. Tests the precision of your internal timekeeper — the key process in Wing & Kristofferson's (1973) two-process model.
Study a set of images, then decide which ones you saw. Tests visual recognition memory and the remarkable capacity of human long-term visual memory. Standing (1973).
Which object is bigger in real life? Quickly compare the sizes of everyday objects. Tests semantic conceptual knowledge and the mental size representation effect. Moyer & Landauer (1967).
Advance or rewind through the alphabet by a given number of steps. Tests working memory manipulation and executive control. Based on Logan's (1988) alphabet arithmetic paradigm.
Spot the face showing a different emotion from all the others. Tests emotional face processing and selective attention. Based on Ekman's (1969) basic emotion categories.
Memorize which color belongs to which shape. Tests your ability to form and retain visual feature bindings in working memory. Based on Wheeler & Treisman (2002).
Read a statement and quickly judge if it's true or false. Tests the speed and accuracy of semantic memory access. Based on Collins & Quillian's (1969) semantic network model.